Heritability Analysis and Phenotypic Characterization of Spider Plant (Cleome gynandra L.) for Yield

Kangai Munene, A and Nzuve, F and Ambuko, J and Odeny, D A (2018) Heritability Analysis and Phenotypic Characterization of Spider Plant (Cleome gynandra L.) for Yield. Advances in Agriculture, 2018 (856842). pp. 1-11. ISSN 2356-654X

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Knowledge on phenotypic diversity among existing spider plant accessions is a milestone in the improvement of spider plant, which is a highly nutritious indigenous vegetable in Kenya. A study involving agronomic and morphological characterization of 49 spider plant accessions assembled from East and South Africa was carried out at the University of Nairobi Field Station for two seasons in a randomized complete block design with three replications. Phenotypic data was collected on growth habit, flower, petiole, leaf and stem colour, petiole, leaf and stem hairiness, number of leaves per plant, plant height, number of primary branches, leaf length and width, single leaf area, and chlorophyll content according to FAO descriptors with modifications. Data was analyzed using both DARwin software V6 and Genstat Version 14. We observed significant differences among the traits implying great genetic variability among the evaluated spider plant accessions. The high genetic variation was further validated using the Unweighted Pair Group Method with Arithmetic mean (UPGMA) clustering method with stem and flower colour as key traits. The 49-spider plant accessions were clustered into 2 major groups, each consisting of Kenyan and South African accessions. Stepwise regression revealed that plant height had the most influence on yield in terms of number of leaves per plant. We also observed high heritability for several traits including days to flowering (91%), number of leaves per plant (99%), plant height (99%), number of primary branches (94%), chlorophyll content (94%), and single leaf area (87%). Our results reveal the high genetic variation between different spider plant accessions, especially from different regions of Africa that could be further exploited to improve productivity in the plant. The high heritability of most of the yield related traits is promising for improving yield in the crop through direct selection.

Item Type: Article
Divisions: Research Program : East & Southern Africa
Uncontrolled Keywords: phenotypic diversity, Kenyan, spider plant, nutritious indigenous vegetable, yield related traits
Subjects: Others > Biotechnology
Others > Molecular Biology
Others > Plant Breeding
Others > Genetics and Genomics
Others > African Agriculture
Others > Kenya
Depositing User: Mr Ramesh K
Date Deposited: 07 Aug 2018 08:36
Last Modified: 07 Aug 2018 08:36
URI: http://oar.icrisat.org/id/eprint/10826
Official URL: http://dx.doi.org/10.1155/2018/8568424
Acknowledgement: The authors would like to acknowledge the University of Nairobi for the opportunity to undertake the research. This paper is part of the M.S. thesis entitled “Genetic Characterization and Nutrition Analysis of Eastern and South African Cleome gynandra (Spider Plant) Accessions” submitted to the University of Nairobi towards achievement of an M.S. degree in plant breeding and biotechnology.
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