National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Thirty interspecific crosses (including reciprocals) involving three genotypes/varieties of greengram (Vigna radiate (L) Wilczek) cv. HUM 1 HUM 2 & HUM 8 and five genotypes/varieties of blackgram (Vigna mungo (L.) Hepper) cv. T 9, Pant U 19, PDU 1, BHUU 1 & BHUU 91-346-1 were attempted. Nine out of 30 crosses were successful only when greengram was used as seed parents. The crossability ranged from 0.0 to 61.0 per cent. Germination, survival and pod bearing habit of the F1s hybrids were much better in Kharif season as compared to spring/summer season. The F1 hybrids were intermediate for leaf shape, pod and stem hairiness and pod arrangement while they resembled the maternal parents for cotyledon colour. Purple colour of the stem appeared to be dominant over green colour. The F1s showed positive heterosis for days to flowering and maturity, plant height, number of primary branches, pods per plant and cluster per plant while for pod length, number of seeds per pod, seed yield per plant and l00-seed weight, it exhibited negative heterosis. The mean of the pollen fertility was 15.0 per cent in F1s and 32.5 per cent in F2s indicating the improvement in fertility level when generation advanced. In F2 generation, the hybrids segregated both for greengram and blackgram types. Further, the desirable transgressive segregants were observed in F2 generation for most of the traits indicated that an elite population may be obtained through interspecific hybridization involving greengram and blackgram
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