Correlation Studies for Quantitative Traits in Greengram [Vigna radiata (L.) Wilczek] Genotypes
2014
Lavanya, S Anandhi | Vairam, N | Vanniarajan, C
Greengram, an important grain legume of the arid and semi-arid regions has enough genetic diversity both for quantitative and qualitative characters. Genotypic correlation studies enable breeders to assess the inherent pattern relationship between various traits since it is based on heritable traits. The genotypic correlation for 40 greengram germplasm for 10 quantitative traits viz., days to 50 per cent flowering, number of branches/plant, plant height (cm), number of clusters/plant, number of pods/plant, number of pods/cluster, number of seed/pod, pod length (cm), single plant yield (g) and hundred seed weight (g) were evaluated at two different centers viz., Agricultural College and Research Institute, TNAU, Madurai (kharif 2012 and rabi 2012), and Agricultural Research Station, TNAU, Vaigai Dam (kharif 2012). The correlation of yield and yield contributing characters indicated that seed yield/plant was positive and significantly associated with days to maturity, plant height, number of pods/plant, number of seeds/pod and hundred seed weight. Hence, characters such as plant height, numbers of pods/plant, number of branches/plant, number of clusters/plant and number of seeds/pod has to be given importance during the selection programme to improve the yield potential of the crop.
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