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Phylogenetic studies in Indian Momordica species

KrishiKosh

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Title Phylogenetic studies in Indian Momordica species
Ph D
 
Creator LATCHUMI KANTHAN BHARATHI
 
Contributor A.D.MUNSHI
 
Subject fruits, chromosomes, genetics, hybrids, developmental stages, sowing, crossing over, rapd, biological phenomena, planting
 
Description T-8234
Spine gourd (Momordica dioica Roxb. ex Willd.) is a highly nutritious and
underutilized vegetable containing high amount of protein as compared to other
cucurbitaceous vegetables. Dioecious nature and sexual propagation of this species
makes each seedling plant genetically distinct from the other. Hence, an
exploration was undertaken in different areas of eastern India and 26 distinct
germplasm were collected and maintained at IARI New Delhi. The variability of
these genotypes was evaluated based on 23 quantitative and qualitative traits.
Considerable morphological variations were observed for qualitative traits like leaf
lobing, leaf colour, blossom end rostration, fruit shape, fruit colour and for all the
quantitative characters studied. The estimates of GCV and PCV for all the
characters correspond closely which indicated that selection can be done on the
basis of phenotype alone. Correlation studies indicated that number of fruits/plant,
fruit diameter and fruit weight should be considered while performing selection.
Principal Component Analysis showed that the first four PCs with Eigen values >1
accounted for 65.68 % of the total variance among the accessions. Based on cluster
analysis it was revealed that spine gourd accessions could be categorized into three
distinct groups. The maximum inter-cluster distance was observed between cluster
I and III. The genotypes having high mean performance for most of the economic
traits were grouped in cluster I while the accessions grouped in cluster III exhibited
lower values. The accessions of spine gourd from eastern India showed high
variation and could be used in the crop improvement.
 
Date 2016-09-28T19:31:26Z
2016-09-28T19:31:26Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/79396
 
Format application/pdf
 
Publisher IARI, DIVISION OF VEGETABLE SCIENCE