Genetic Variation in Different Cultivars of Greater Yam (Dioscorea alata)

Authors

  • S Alam Senior Scientist Central Tuber Crops Research Institute (ICAR-CTCRI), Sreekariyam, Thiruvananthapuram - 695017, Kerala, India
  • Euphemia Shylla AICRP on Tuber Crops, Department of Horticulture, Assam Agricultural University, Jorhat 785 013, Assam, India
  • B Bora AICRP on Tuber Crops, Department of Horticulture, Assam Agricultural University, Jorhat 785 013, Assam, India
  • B.K. Saud AICRP on Tuber Crops, Department of Horticulture, Assam Agricultural University, Jorhat 785 013, Assam, India

Keywords:

Greater yam, genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), environmental coefficient of variation (ECV), heritability in broad sense (h2 bs) expected genetic advance (GA)

Abstract

Assessment of 27 accessions of greater yam (Dioscorea alata L.), collected throughout north east  India, was carried out during 2009-2010 at the Experimental Farm, Department of Horticulture,  Assam Agricultural University. Observations were recorded for different morphological characters followingInternational Plant Genetic Resources Institute’s (IPGRI) descriptors for yam. Phenotypic coefficient of  variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the characters indicating  the influence of environment. High heritability (>90%) coupled with high genetic advance (>50%)  was exhibited by total phenol, internode length, petiole length and days to emergence.

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Published

2015-01-15

How to Cite

Alam, S., Shylla, E., Bora, B., & Saud, B. (2015). Genetic Variation in Different Cultivars of Greater Yam (Dioscorea alata). JOURNAL OF ROOT CROPS, 40(1), 39–43. Retrieved from https://ojs338.isrc.in/index.php/jrc/article/view/223

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Research Articles