Author(s):

Porinita Borah, Jyotsna Devi, Debojit Sarma and Niranjan Kumar Chaurasia

Abstract: The present work was carried out during 2016 at ICR Farm (Instructional Cum Research), Assam Agricultural University, Jorhat, Assam. Four green gram “[Vigna radiata (L.) Wilczek]” varieties viz.,Pratap (V1), K851 (V2), SGC 16 (V3), SGC 20 (V4) and their six equiproportional blends B1 (Pratap and K851), B2 (Pratap and SGC 16), B3 (Pratap and SGC20), B4 (K851 and SGC16), B5 (K851 and SGC 20), B6 (SGC16 and SGC 20) were studied in six environments to accesses the performance of blends relative to their component cultivars in pure stands. The twelve different characters viz., days to first flower bud initiation, days to first pod initiation, 75 % pod maturity, plant height, primary branches, secondary branches, clusters per plant, pods per plant, seeds per pod, hundred grain weight, grain yield per plant and number of nodules were observed at different growth stages. The mean performance of the genotypes under study revealed that blends performed better than the pure stand cultivar for different characters except seeds per pod and plant height. The blend cultivar B4 (K851 and SGC16) produced highest seed yield per plant. Other genotype such as Pratap (V1), Pratap and 851 (B1), Pratap and SGC16 (B2), SGC 16 and SGC20 (B6) were found promising for seed yield. The information generated from the study helpful for the pulse breeders to address a few issues in order to enhance green gram productivity through an approach of developing appropriate varietal blends.

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