Abstract
Large-scale cultivation of pearl millet [Pennisetum glaucum (L.) R. Br. F1 hybrids in India has led to increased incidence of downy-mildew (Sclerospora graminicola). There is concern that the A1 male-sterile cytoplasm used in all the hybrids released so far is responsible for this increase. The influence of A1 malesterile cytoplasm on downy-mildew incidence in pearl millet was studied by comparing the disease reaction of 40 pairs of F1 hybrids, each pair carrying respectively a1 male-sterile and normal B cytoplasm. Mean downy-mildew incidence was similar in the hybrids carrying either A1 male-sterile or B cytoplasm. The general combining ability of lines with and without A1 cytoplasm was found to be similar for downy-mildew incidence. These results indicated that in pearl millet A1 cytoplasm is not associated with increased downymildew incidence. The possible danger of using only one source of cytoplasm has been briefly discussed.
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Anand Kumar K, Jain RP, Singh SD (1983) Downy mildew reactions of pearl millet lines with and without cytoplasmic male sterility. Plant Dis 67:663–665
Basavaraj R, Safeeulla KM, Murty BR (1980) The role of gene effects and heterosis for resistance to downy mildew in pearl millet. Indian J Genet Plant Breed 40:537–548
Burton GW (1958) Cytoplasmic male sterility in pearl millet [Pennisetum glaucum (L.) R. Br.]. Agron J 50:230
Burton GW (1965) Pearl millet Tift 23 A released. Crops Soils 17:19
Burton GW (1980) Pearl millet. In: Fehr WR, Hadley HH (eds) Hybridization of crop plants. Am Soc Agron, Madison, USA, pp 457–459
Burton GW, Athwal DS (1967) Two additional sources of cytoplasmic male sterility in pearl millet and their relationship to Tift 23 A. Crop Sci 7:209–211
Burton GW, Powell JB (1968) Pearl millet breeding and cytogenetics. Adv. Agron 20:50–87
Dave HR (1987) Pearl millet hybrids. In: Proc Int Pearl millet workshop. 7–11 April, 1986. International Crops Research Institute for Semi-Arid Tropics, Patancheru, A. P. 502324, India, pp 121–126
Futrell MC (1975) Puccinia polyspora epidemics on maize associated with cropping practice and genetic homogeneity. Phytopathology 65:1040–1042
Futrell MC Webster OJ (1965) Ergot infection and sterility in grain sorghum. Plant Dis Rep 49:680–683
Hanna WW (1989) Characteristics and stability of new cytoplasmic-nuclear male-sterile source in pearl millet. Crop Sci 29:1457–1459
Kempthorne O (1957) An introduction to genetic statistics. John Willey and Sons Inc., New York
Rai KN, Rao AS (1990) Recent developments in breeding pearl millet male-sterile lines at ICRISAT. Paper presented at the All-India Pearl Millet Improvement Project Workshop, Andhra Pradesh Agric Univ, Hyderabad 4–5 May 1990, India, pp 12
Reitz LP, Lucken LA (1972) Hybrid wheat — a review of its status and prospects. Agric Sci Rev 10:7–16
Safeeulla KM (1977) Genetic vulnerability: The basis of recent epidemics in India. Ann New York Acad Sci 287:72–85
Scheifele GL, Whitehead W Rowe C (1970) Increased susceptibility to Southern leaf spot (Helminthosporium maydis) in inbred lines and hybrids of maize with Taxes male-sterile cytoplasm. Plant Dis Rep 54:501–503
Singh F, Singh RK, Singh RM, Singh RB (1978) Genetic analysis of downy-mildew (Sclerospora graminicola) resistance in pearl millet (Pennisetum typhoides (Burn.) S. & H.). Z Planzenzuchtg 81:54–57
Singh SD, Gopinath R (1985) A seedling inoculation technique for detecting downy-mildew resistance in pearl millet. Plant Dis 69:582–584
Tatum LA (1971) The Southern corn leaf blight epidemic. Science 171:1113–1116
Thakur RP, Rao VP, King SB (1989) Ergot susceptibility in relation to cytoplasmic male sterility in pearl millet. Plant Dis 73:676–678
Wilson JP, Hanna WW (1992) Effects of gene and cytoplasmic substitution in pearl millet on leaf blight epidemics and infection by Pyricularia grisea. Phytopathology 82:839–842
Yadav OP, Khairwal IS, Singh S (1992) Smut severity of pearl millet hybrids with male-sterile and fertile cytoplasm. Euphytica 64:139–142
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Yadav, O.P., Manga, V.K. & Gupta, G.K. Influence of A1 cytoplasmic substitution on the downy-mildew incidence of pearl millet. Theoret. Appl. Genetics 87, 558–560 (1993). https://doi.org/10.1007/BF00221878
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DOI: https://doi.org/10.1007/BF00221878