Abstract
The “North Indian sugarcanes”, cultivated by Indian peasants during many centuries, have been studied morphologically very exactly byC. A. Barber from 1910 to 1920. They were named “Saccharum Barberi” byJeswiet. Barber distinguished four groups. In 1931 the present author found the following chromosome numbers in these groups: 2n=116 and 2n=82 in the Sunnabile group; 2n=82 in the Mungo group; 2n=124 and 2n=107 in the Nargori group and about 91 in the Saretha group. The first three groups are sterile, the last is fertile.
It is shown that the North Indian sugarcanes are hybrids between ancient indigenous sugar canes with a basic number of 17 chromosomes, and forms ofS. spontaneum withn=40,n=48 andn=56 respectively. Differences in the numbers of chromosomes contributed by the mother type may in part have their origin in endo-duplication, as commonly observed inSaccharum hybrids. Details are presented in Table 2.
The differences found between different forms of IndianS. spontaneum in respect to chromosome number, sugar content and mosaic resistance may be attributed to intercrossing with canes of the fertile Saretha group.
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Bremer, G. The origin of the North Indian sugarcanes. Genetica 37, 345–363 (1966). https://doi.org/10.1007/BF01547142
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DOI: https://doi.org/10.1007/BF01547142