Abstract
Taro is an important tropical tuber crop, used as a staple food or subsistence food by millions of people in the developing countries. A program was done to analyze and identify the same promising 20 selected local and Indian accessions taro, aiming at the characterization of the extent and distribution of genetic diversity using morphological marker with the define objectives ‘to find genetic variability amongst the 20 taro genotypes collected from different agro-climatic zones in India, in respect of plant physical (like length of main sucker, no of petioles, length of leaf lamina, wt. of side tuber, number of side tuber, estimated Corm yield, breadth of leaf lamina)’. The present study revealed that the genetic diversity recorded through physical parameters corresponded with the genetic diversity revealed through molecular data analysis. On the basis of D2 statistics the 20 genotypes were grouped into six different clusters (I-VI). Most of the local taro genotypes collected from different locations (BCC-1, BCC-2, BCC10, BCC15, BCC18, BCC-21, BCC24 and BCC-25) were placed in Cluster II with moderate intra cluster distance indicating their closeness, and showed similar phenotypic characters. The genotypes viz. FC-4, FC-11 and PKS-1 were found to distantly relate to other genotypes and were grouped into Cluster III.
Highlights
MATERIALS METHODSThe experiment was conducted at the Central Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal
The present investigation was done to analyze and identify some promising local collections and genotypes of taro, aiming at the characterization of the extent and distribution of genetic diversity using D2 statistics based on agromorphological parameters
In the present study attempt was made to group 20 taro genotypes collected from different parts of West Bengal and India on the basis of D2 statistics based on several agro-morphological parameters
Summary
The experiment was conducted at the Central Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal. The site is situated at 9.75MSL, at approximately 22057‘ N latitude and 88020‘E longitude. Topographical situation of the experimental site is under gangetic new alluvial plains of West Bengal. The total of twenty Colocasia esculenta (L.) Schott accessions were considered in this study. The accessions were collected from different parts of West Bengal and other states (Assam, Orissa, Kerala) India. An overview of the genotypes that have been studied is given below in Table-1. Representative samples were collected based on traditional knowledge of inhabitants and phenotypic variations observed. Nadia Hooghly Hooghly CTCRI CTCRI CTCRI CTCRI Jorhat Jorhat Murshidabad Jorhat. The experiment was laid out in randomise complete block design using 10m x 5m plots with three replications.
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