Summary
The somatic karyotype of pearl millet Pennisetum americanum (L.) Leeke. (2n = 14) has been studied in several cultivars, but few cytological markers have been discovered which could help in the easy identification of the chromosomes. Analysis of pachytene bivalents permits such identification but is feasible only in a few cultivars. Recently, several lines having telocentric chromosomes have been produced and classified but their potentialities as cytogenetic tools have yet to be explored. Some African populations of pearl millet carry B-chromosomes in their karyotype. Cytogenetics of B-chromosomes has been reported in great detail. Bs undergo spontaneous changes to produce deficient- and iso-chromosomes. The main effect of B-chromosomes is on chiasma frequency which is exerted by the relative amounts of chiasma promoting euchromatin and the chiasma depressing heterochromatin in the Bs. Haploid plants occur occasionally and sometimes show a low degree of seed set, offering a possibility of establishing homozygous inbred lines. Cytogenetics of several spontaneous and induced autotetraploids have been reported. In general quadrivalent formation between the seven sets of four homologues was random. Seed set of the autotetraploids could be improved by selection; improved seed fertility was found to be associated with increased chiasma frequency, increased quadrivalent frequency and regular distribution of chromosomes at anaphase I. Genes controlling morphological characters of plant phenotype segregate independent of those controlling fertility and in pearl millet polyploidy per se is not limiting to plant vigour. Primary trisomics represent the best studied among the aneuploids of pearl millet. All the seven primary trisomics have been identified and described. Some were used in assigning genes to specific chromosomes but in general trisomies have poor vigour and fertility, and show low frequency of transmission. Apart from B-chromosomes, cytogenetics of interchanges has been the best studied aspect of pearl millet. The frequency of co-orientation of an interchange complex at metaphase I, which determines the fertility or sterility of the interchange heterozygote, is influenced by the genetic background and thus is theoretically amenable for selection leading to improved fertility of the heterozygote. Interchange tester-stocks have been assembled which can be used to identify the chromosomes involved in any newly obtained interchange. A complex interchange line involving all the chromosomes of the complement has also been produced, but the ring-of-fourteen produces total male and female sterility.
Genotypic control of mitosis and meiosis has been reported, with reference to chromosome numerical mosaicism, multiploid sporocytes, desynapsis and chromosome fragmentation, and male sterility. Pearl millet being a largely outbreeding species, forced inbreeding was mainly found to result in loss of morphological vigour and reduction in mean chiasma frequency per PMC. Interspecific hybrids between pearl millet and several related species have been cytologically investigated and homology of the seven chromosomes of pearl millet with seven of the fourteen chromosomes of P. purpureum has been demonstrated. Cytogenetic evidence from haploids, autopolyploids and interspecific hybrids has indications to suggest that the haploid number of x = 7 is derived from x = 5, but the evidence is inconclusive and needs critical evaluation.
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Literature
Arundhati, K. (1980): Genotypic control of fertility and meiotic chromosome behaviour in autotetraploid pearl millet, Pennisetum typhoides (Burm.) S & H. Ph. D. Thesis, Andhra Univers. Waltair(India)
Avdulov, N.P. (1931): Karyosystematische Untersuchung der Familie Graamineen. Bull. Appl. Bot. Pl. Breed., Suppl. 4, 1–428
Brar, D.S.; Minocha, J.L.; Gill, B.S. (1973): Translocations in Pennisetum typhoides involving all the chromosomes in one complex. Curr. Sci. 42, 653–654
Brunken, J.N. (1977): A systematic study of Pennisetum Sect. Pennisetum (Gramineae). Amer. J. Bot. 64, 161–176
Brunken, J.; deWet, J.M.J.; Harlan, J.R. (1977): The morphology and domestication of pearl millet. Economic Bot. 31, 163–174
Burnham, C.R. (1946): An ‘Oenothera’ or multiple translocation method of establishing homozygous lines. J. Am. Soc. Agron. 38, 702–707
Burton, G.W.; Powell, J.B. (1968): Pearl millet breeding and cytogenetics. Adv. Agron. 20, 49–89
Chandola, R.P.; Jain, S.N. (1970): Karyomorphological studies in Pennisetum typhoides L. Cytologia 35, 181–196
Dhesi, J.S.; Gill, B.S.; Sharma, H.L. (1973): Cytological studies of desynaptic stock in pearl millet, Pennisetum typhoides (Burm.) S & H. Cytologia 38, 311–316
Dhesi, J.S.; Minocha, J.L.; Sidhu, J.S. (1975): Effect of minerals on the chiasma frequency in desynaptic pearl millet. Curr. Sci. 44, 862–863
Gill, B.S.; Minocha, J.L.; Gupta, D.; Kumar, D. (1969): Chromosome behaviour and seed setting in autotetraploid pearl millet. Indian J. Genet. 29, 462–467
Gill, B.S.; Sharma, H.L.; Dhesi, J.S. (1973): Cytomorphological studies of haploid pearl millet. Cytologia 38, 411–416
Gill, B.S.; Sraon, M.S.; Minocha, J.L. (1966): Colchicine induced tetraploidy in Pennisetum typhoides. S & H. J. Res. Punjab Agricult. Univers. Ludhiana 3, 260–263
Gill, B.S.; Virmani, S.S. (1971a): Double trisomic in pearl millet. Indian J. Genet. 31, 296–299
Gill, B.S.; Virmani, S.S. (1971b): Triple trisomic in pearl millet. Curr. Sci. 40, 22
Gill, B.S.; Virmani, S.S.; Minocha, J.L. (1970a): Primary simple trisomies in pearl millet. Can. J. Genet. Cytol. 12, 474–483
Gill, B.S.; Virmani, S.S.; Minocha, J.L. (1970b): Aneuploids in pearl millet. Experientia 26, 1021
Gildenhuys, P.; Brix, K. (1961): Genic control of aneuploids in Pennisetum. Heredity 16, 358–363
Gildenhuys, P.; Brix, K. (1964): Genetically controlled variability of chromosome number in Pennisetum. Heredity 19, 533–542
Gupta, V.P. (1977): Genetics of Pennisetums. Ludhiana. India: Punjab Agricult. Univers.
Hanna, W.W. (1979): Interspecific hybrids between pearl millet and fountain grass. J. Hered. 70, 425–427
Hanna, W.W.; Powell, J.B.; Burton, G.W. (1976): Relationship to polyembryony, frequency, morphology, reproductive behaviour, and cytology of autotetraploids in Pennisetum americanum. Can. J. Genet. Cytol. 18, 529–536
Hanna, W.W.; Young, J.R. (1974): Gamma radiation effects on pearl millet pollen. Crop. Sci. 14, 600–601
Harinarayana, G.; Murty, B.R. (1971): Cytological regulation of recombination in Pennisetum and Brassica. Cytologia 36, 435–448
Jauhar, P.P. (1968): Inter and intragenomal chromosomal pairing in an interspecific hybrid and its bearing on the basic chromosome number in Pennisetum. Genetica 39, 360–370
Jauhar, P.P. (1969a): Partial desynapsis in pearl millet (Pennisetum typhoides stapf et Hubb.). Naturwissenschaften 56, 571–572
Jauhar, P.P. (1969b): Amphidiploidization induced by decapitation in an interspecific hybrid of Pennisetum. Curr. Sci. 38, 420–421
Jauhar, P.P. (1970a): Chromosome behaviour and fertility of the raw and evolved tetraploids of pearl millet, Pennisetum typhoides, stapfet Hubb. Genetica 41, 407–427
Jauhar, P.P. (1970b): Haploid meiosis and its bearing on the phylogeny of pearl millet, Pennisetum typhoides Stapf et Hubb. Genetica 41, 532–540
Jauhar, P.P. (1972): Induced interchange heterozygosity in pearl millet, Pennisetum typhoides (Burm.) Stapf et Hubb. Experientia 28, 710
Jauhar, P.P. (1973): Inter and intragenomal chromosome relationships in Pennisetum hybrid. In: 13th International Genet. Congr. Genetics 74 (2), S 126
Jauhar, P.P. (1974): Induction of multiple chromosome interchanges in pearl millet, Pennisetum typhoides. Theor. Appl. Genet. 44, 54–62
Jauhar, P.P.; Singh, U.; Alice, C.J. (1976): Diploid revenants in the progeny of colchicine induced tetraploids of pearl millet, Pennisetum typhoides (Burm.) Stapf et Hubb. Genetica Iberica 28, 15–20
Koduru, P.R.K. (1978): Cytogenetic studies on spontaneous mutant phenotypes of Pennisetum americanum (L.) Leeke. Ph. D. Dissertation, Andhra Univers. Waltair (India)
Koduru, P.R.K. (1979): Metaphase I centromere co-orientation in interchange heterozygotes of pearl millet. Genet. Res. 34, 69–79
Koduru, P.R.K. (1980): Chromosome pairing and the meiotic behaviour of univalents in the synaptic mutants of pearl millet. Genetica 54, 191–195
Koduru, P.R.K.; Krishna Rao, M. (1978): Chromosome pairing and desynapsis in spontaneous autopolyploids of Pennisetum typhoides. Cytologia 43, 445–452
Koduru, P.R.K.; Murty, T.G.K.; Lakshmi, K.V. (1980): Sectional translocation monosomy in a plant of Pennisetum americanum (L.) Leeke. Chromosoma 78, 365–370
Krishna Rao, M.; Koduru, P.R.K. (1978a): Cytogenetics of a factor for syncyte formation and male sterility in Pennisetum americanum. Theor. Appl. Genet. 53, 1–7
Krishna Rao, M.; Koduru, P.R.K. (1978b): Asynapsis and spontaneous centromeric breakage in an inbred line of Pennisetum americanum (L.) Leeke. Proc. Indian Acad. Sci. B 87, 29–35
Krishna Rao, M.; Koduru, P.R.K. (1978c): Inheritance of genetic male sterility in Pennisetum americanum (L.) Leeke. Euphytica 27, 777–783
Krishna Rao, M.; Pantulu, J.V.; Jayalakshmi, K. (1979): Effect of B-chromosomes on the duration of the mitotic cycle in pearl millet. Experientia 35, 1154
Krishnaswamy, N.; Raman V.S. (1956): Studies on the interspecific hybrid of Pennisetum typhoides x P. purpureum IV. Cytogenetics of the allotetraploid. Genetica 28, 345–360
Krishnaswamy, N.; Raman, V.S.; Hrishikesan Nair, N. (1950): An autotetraploid in pearl millet. Curr. Sci. 19, 252–253
Krishnaswamy, N.; Rangaswamy Ayyangar, G.N. (1941): An autotriploid in the pearl millet. (Pennisetum typhoides Stapf et Hubb.) Proc. Indian Acad. Sci. B 13, 9–23
Lal, J. (1978): Comparative effects of Gamma rays, Diethyl sulphate, Ethylene imine, and Maleic hydrazide in producing meiotic chromosomal aberrations in Pennisetum typhoides. J. Cytol. Genet. 13, 75–81
Lal, J.; Srinivasachar, D. (1979a): Induction of segmental interchanges in pearl millet (Pennisetum typhoides). Theor. Appl. Genet. 54, 27–32
Lal, J.; Srinivasachar, D. (1979b): Effect of Gamma rays, Diethyl Sulphate, Ethylene Imine, and Maleic Hydrazide on chiasma frequency in Pennisetum typhoides. S & H. J. Cytol. Genet. 14, 108–112
Lakshmi, K.V.; Murthy, T.G.K.; Koduru P.R.K. (1979): Cytogenetic behaviour and phosphate and potassium content in desynaptic pearl millet. Theor. Appl. Genet. 55, 189–190
Lakshmi, N.; Yacob Z. (1979): A case of partial desynapsis, cell wall suppression and chromatin transfer in pearl millet. Microbios Letters 7, 75–82
Laxmi, V.; Singh, R.B.; Singh, B.D.; Singh, R.M. (1975a): Induction of translocations and trisomics in pearl millet by γ-rays and ethylmethane sulphonate. Indian J. Exp. Biol. 13, 460–464
Laxmi, V.; Singh, R.B.; Singh, B.D.; Singh, R.M. (1975b): Meiotic anomalies induced by γ-rays and ethylmethane sulphonate treatments in pearl millet. Indian J. exp. Biol. 13, 465–467
Levan, A. (1942): Studies on the meiotic mechanism of haploid rye. Hereditas 28, 177–211
Lobana, K.S.; Gill, B.S. (1973): Pachytene chromosomes of Pennisetum typhoides. Cytologia 38, 713–717
Manga, V. (1972): Cytogenetic studies of pearl millet. (Pennisetum typhoides Stapf et Hubbard) Ph. D. Thesis, Andhra Univers. Waltair (India)
Manga, V. (1976): Chiasma frequencies in primary trisomics of pearl millet. Can. J. Genet. Cytol. 18, 11–15
Manga V. (1977): Interchange trisomics in pearl millet. Experientia 33, 1581–1582
Manga, V.; Pantulu, J.V. (1971): The meiotic behaviour of a haploid pearl millet. Genetica 42, 319–328
Manga, V.; Pantulu, J.V. (1974): Chiasma frequency in homozygotes and heterozygotes of pearl millet. Proc. Indian Acad. Sci. B, 80, 105–120
Mani, J.N.R. (1973): Occurrence of centric fragment chromosomes and their meiotic behaviour in pearl millet (Pennisetum typhoides Stapf and Hubb.). Curr. Sci. 42, 581–582
Minocha, J.L. (1978): Inheritance and linkage studies in pearl millet. In: Proc. 14. Int. Cong. Genet. Moscow, pp. 106
Minocha, J.L.; Brar, D.S. (1976): Multiple interchange trisomic in pearl millet. Indian J. Genet. 36, 153–155
Minocha, J.L.; Brar, D.S.; Gill, B.S. (1974): Tertiary trisomies in Pennisetum typhoides. Experientia 30, 623–624
Minocha, J.L.; Dhesi, J.S.; Sidhu, J.S. (1975): Inheritance of desynapsis in pearl millet. Indian J. Genet., 35, 470–471
Minocha, J.L.; Gill, B.S.; Sharma, H.L.; Sidhu, J.S. (1978): Cytogenetic studies of primary trisomics in pearl millet. National Seminar on Genetics of Pennisetums, pp. 44–45. Ludhiana: Punjab Agricultural Univ. (abstracts)
Minocha, J.L.; Gill, B.S.; Sidhu, J.S. (1978): Inheritance and linkage studies in pearl millet. National Seminar on Genetics of Pennisetums, pp. 43–44. Ludhiana: Punjab Agricult. Univ. (abstracts)
Minocha, J.L.; Sharma, H.L.; Gill, B.S. (1972): Polyploids of inbreds and open pollinated variety of pearl millet. Indian J. Genet. 32, 211–214
Minocha, J.L.; Sharma, H.L.; Sidhu, J.S.; Gill, B.S. (1976): Meiotic and breeding behaviour of primary trisomics in pearl millet. Indian J. Genet. 36, 38–43
Minocha, J.L.; Sidhu, J.S. (1979): Primary trisomic analysis in pearl millet. Genetics 91, S 82
Murthy, J.V.V.S.N.; Sukhadev, P.; Subba Rao, M.V.; Manga, V. (1979): Meiosis in tertiary trisomic plants of pearl millet. Ind. J. Bot. 2, 70–72
Narasinga Rao, P.S.R.L. (1977): A double telo trisomic for the seventh chromosome in pearl millet. Curr. Sci. 46, 464
Narasinga Rao, P.S.R.L. (1978): Cytogenetic studies of autotetraploid pearl millet (Pennisetum typhoides). Ph. D. Thesis, Andhra Univers. Waltair (India)
Narasinga Rao, P.S.R.L.; Narayano Rao, I. (1977). Two interchange trisomics in pearl millet. Curr. Sci. 46, 314–315
Narasinga Rao, P.S.R.L.; Subba Rao, M.V.; Narayana Rao, I. (1977): Telocentric chromosomes in pearl millet Pennisetum typhoides. Experientia 33, 308–309
Narayan, K.N. (1954): Mitosis in the pollen mother cells of Pennisetum ramosum (2n = 10) Curr. Sci. 23, 407–408
Pantulu, J.V. (1958): A case of chromosomal interchange in pearl millet. Curr. Sci. 27, 497–498
Pantulu, J.V. (1960): Accessory chromosomes in Pennisetum typhoides. Curr. Sci. 29, 28–29
Pantulu, J.V. (1961): Cytological studies in the genus Pennisetum with some cytological observations in the genus Cassia. Ph. D. Thesis, Andhra Univers. Waltair (India)
Pantulu, J.V. (1967): Pachytene pairing and meiosis in the F1 hybrid of Pennisetum typhoides and P. purpureum. Cytologia 32, 532–541
Pantulu, J.V. (1968): Meiosis in an autotriploid pearl millet. Caryologia 21, 11–15
Pantulu, J.V.; Krishna Rao, M.; Ganapathi, K.; Subba Rao, B. (1978): Giemsa staining of heterochromatin of A- and B-chromosomes of Pennisetum typhoides (Burm.) S & H. Indian J. Bot. 1, 101–104
Pantulu, J.V.; Manga, V. (1969): Meiosis in a haploid pearl millet. Curr. Sci. 38, 143–144
Pantulu, J.V.; Manga, V. (1971): Monofactorial ‘Multiploid sporocytes’ condition induced by EMS in pearl millet. Genetica 42, 214–218
Pantulu, J.V.; Manga, V. (1972a): Cytogenetics of 16 chromosome plants in pearl millet, Pennisetum typhoides. Cytologia 37, 389–394
Pantulu, J.V.; Manga, V. (1972b): Cytology of inbreds and F1 hybrids of pearl millet. Theor. Appl. Genet. 42, 69–74
Pantulu, J.V.; Manga, V. (1975): Influence of B-chromosomes on meiosis in pearl millet. Genetica 45, 237–251
Pantulu, J.V.; Manga, V.; Subba Rao, M.V. (1976): Monotelodisomics in pearl millet. Theor. Appl. Genet. 47, 85–86
Pantulu, J.V.; Rao, G.J.N. (1977a): A pearl millet strain with 2n= 12 + 4 telocentric chromosomes. Curr. Sci. 46, 390–392
Pantulu, J.V.; Rao, G.J.N. (1977b): A tertiary trisomic with two telocentric chromosomes in pearl millet. Cereal Res. Comm. 5, 311–313
Pantulu, J.V.; Rao, G.J.N. (1977c): Double telo trisomic for the nucleolar chromosome in pearl millet. Cereal Res. Comm. 5, 461–463
Pantulu, J.V.; Rao, G.J.N. (1977d): Genetically controlled chromosome numerical mosaicism in pearl millet. Proc. Ind. Acad. Sci. 86 B, 15–22
Pantulu, J.V.; Subba Rao, M.V. (1976): The effect of a desynaptic gene on B-chromosomes in pearl millet. Curr. Sci. 45, 418–420
Patil, B.P.; Vohra, S.K. (1962): Desynapsis in Pennisetum typhoides. Curr. Sci. 31, 345–346
Powell, J.B.; Burton, G.W. (1966): Nucleolus-organizing accessory chromosomes in pearl millet, Pennisetum typhoides. Crop Sci. 6, 131–134
Powell, J.B.; Burton, G.W. (1968): Polyembryony in pearl millet, Pennisetum typhoides. Crop. Sci. 8, 771–773
Powell, J.B.; Burton, G.W. (1969): Chromosome interchanges of spontaneous origin in pearl millet, Pennisetum typhoides Crop. Sci. 9, 252–253
Powell, J.B.; Hanna, W.W.; Burton, G.W. (1975): Origin, cytology and reproductive behaviour of haploids in pearl millet. Crop Sci. 15, 389–392
Pushpa, K. (1980): EMS induced A and B chromosome translocation in pearl millet. Proc. Indian Acad. Sci. B. 89, 37–41
Raman, V.S.; Krishnaswamy, D.; Nair, M.K. (1962): Studies on the progeny of autotetraploid Pennisetum typhoides. Stapf et Hubb. J. Indian bot. Soc. 41, 268–270
Rao, G.J.N. (1980): Cytogenetic studies on telocentric chromosomes and chromosome numerical mosaicism in pearl millet. (Pennisetum typhoides (Burm.) S & H.) Ph. D. Thesis, Andhra Univers. Waltair (India)
Read, J.C.; Bashaw, E.C. (1974): Intergeneric hybrid between pearl millet and buffelgrass. Crop Sci. 14, 401–403
Sethi, G.S.; Kalia, H.R.; Ghai, B.S. (1970): Cytogenetical studies of three interspecific hybrids between Pennisetum typhoides Stapf and Hubb. and P. purpureum Schumach. Cytologia 35, 96–101
Sharma, A.K.; De, D.N. (1956): Cytology of some millets. Caryologia 8, 294–308
Sidhu, J.S., Minocha, J.L.; Gill, B.S. (1977): Cytological studies of some chromosome interchanges in pearl millet. Crop. Impr. 4, 28–34
Singh, R.B.; Singh, B.D.; Laxmi, V.; Singh, R.M. (1977a): Meiotic behaviour of spontaneous and mutagen induced partial desynaptic plants in pearl millet. Cytologia 42, 41–47
Singh, R.B.; Singh, B.D.; Singh, R.M.; Laxmi, V. (1977b): Meiosis in radiation induced triploid and tetraploid plants of pearl millet. Cytologia 42, 633–637
Sreenath, P.R., Sinha, S.K. (1968): An analysis of chromosome behaviour during meiosis in asynaptic maize1. Distribution of bivalents. Cytologia 33, 69–72
Sree Rangasamy, S.R.; Devasahayam, P.; Raman, V.S. (1971): Cytogenetical evaluation of the progenies of a trispecific hybrid in Pennisetum. Caryologia 24, 19–26
Sree Ramulu, K. (1971): Cytomorphology of the progeny of a raw allopolyploid in Pennisetum. Cytologia 36, 652–668
Sree Ramulu, K.; Sree Rangasamy, S.R. (1971): Karyomorphological studies in Pennisetum. Cytologia 36, 480–486
Srinivasachar, D.; Lal, J. (1971): A direct evidence for the misdivision hypothesis. Curr. Sci. 40, 147–148
Srinivasachar, D.; Mohandas, T.K. (1971): Effect of mutagens, hydraxylamine, ethylmethane sulphonate and gamma rays separately and in combination on meiotic chromosomes. Caryologia 24, 1–11
Srivastava, H.K.; Balyan, H.S. (1977): Increased chiasma frequency in some hybrids of pearl millet. J. Hered. 68, 338–340
Subba Rao, M.V. (1978): Meiosis in diploid and tetraploid desynaptics of pearl millet. Proc. Indian Acad. Sci. B 87, 17–22
Subba Rao, M.V. (1980a): Inheritance of B-chromosomes in pearl millet. Heredity 45, 1–6
Subba Rao, M.V. (1980b): Genetics of desynaptics in pearl millet. Theor. Appl. Genet. 56, 85–89
Subba Rao, M.V.; Pantulu, J.V. (1978): The effects of derived B-chromosomes on meiosis in pearl millet Pennisetum typhoides. Chromosoma (Berl.) 69, 121–130
Sukhadev, P.; Manga, V.; Subba Rao, M.V.; Murthy, J.V.V.S. (1979): Meiosis in a plant with three telocentric chromosomes of pearl millet (Pennisetum typhoides S & H.) J. Cytol. Genet. 14, 189–191
Tyagi, B.R. (1975a): Karyomorphology of somatic chromosomes in pearl millet. Proc. Indian Natl. Sci. Acad. 41 Part B, 462–465
Tyagi, B.R. (1975b): Translocation stocks in pearl millet. Nucleus 18, 151–155
Tyagi, B.R. (1975c): Tertiary trisomics in pearl millet. Proc. Indian Natl. Sci. Acad. 41, Part B, 545–549
Tyagi, B.R. (1976a): Cytological identification of translocated chromosomes in Pennisetum typhoides (Burm.) Stapf and Hubb. by observing hybrids between translocation homozygotes and translocation testers. Proc. Indian Natl. Sci. Acad. 42B, 117–121
Tyagi, B.R. (1976b): Synthesis of complex interchange stocks in pearl millet. Nucleus 19, 58–63
Tyagi, B.R. (1976c): Extra chromosomes in primary simple trisomics of pearl millet in crosses with translocation testers. Nucleus 19, 112–114
Tyagi, B.R. (1978): Distribution pattern of translocation break points in pearl millet (Pennisetum typhoides Burm. Stapf and Hubb.). Sci. Cult. 44, 272–273
Tyagi, B.R., Singh, R.B. (1974): Complete interchange stock in pearl millet. Proc. Indian Natl. Sci. Acad. 40 Part B, 359–362
Tyagi, B.R.; Singh, R.B. (1975): Induced translocations in pearl millet. Nucleus 18, 19–24
Venkateswarlu, J.; Mani, J.N.R. (1978): Tertiary trisomics in pearl millet (Pennisetum typhoides Stapf and Hubb.) Genetica 48, 145–149
Venkateswarlu, J.; Pantulu, J.V. (1968): Morphology of pachytene chromosomes in pearl millet. Heredity 59, 69–70
Venkateswarlu, J.; Pantulu, J.V. (1970): The cytological behaviour of B-chromosomes in Pennisetum typhoides. Cytologia 35, 444–448
Virmani, S.S.; Gill, B.S. (1971): Cytological behaviour of primary simple trisomics of pearl millet. Caryologia 24, 427–433
Virmani, S.S.; Gill, B.S. (1972): Somatic chromosomes of Pennisetum typhoides (Burm.) S & H. Cytologia 37, 257–260
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Pantulu, J.V., Krishna, M.R. Cytogenetics of pearl millet. Theoret. Appl. Genetics 61, 1–17 (1982). https://doi.org/10.1007/BF00261503
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DOI: https://doi.org/10.1007/BF00261503