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Evaluation of vegetable pigeonpea [Cajanus cajan (L.) Millsp] genotypes for yield stability

OAR@ICRISAT

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Relation http://oar.icrisat.org/12756/
https://link.springer.com/article/10.1186/s43170-021-00061-8
https://doi.org/10.1186/s43170-021-00061-8
 
Title Evaluation of vegetable pigeonpea [Cajanus cajan (L.) Millsp] genotypes for yield stability
 
Creator Ojwang, J D
Nyankanga, R
Rao, N V P R G
Imungi, J
 
Subject Pigeonpea
Kenya
 
Description Background
Vegetable pigeonpea is an important food security crop in the marginal dry areas of the Eastern region of Kenya. The adaptation and stability of vegetable pigeonpea genotypes across different agro-ecological zones in Kenya are not adequately determined. The objective of this study was to evaluate the yield stability and adaptability of genotypes: KAT 60/8, MZ 2/9, ICEAP 00554, ICEAP 00557 and KIONZA based on additive main effects and multiplicative interactions (AMMI) and Genotype plus genotype by environment (GGE biplot) analysis.

Methods
Evaluation of vegetable pigeonpea Genotypes was conducted at Kiboko, Katumani and Kambi ya Mawe research stations located in Eastern region and University of Nairobi Field station in central region of Kenya. The genotypes were planted in a Randomized Complete Block design (RCBD), replicated three times at all sites. Rainfall at Kiboko and Kabete were supplemented with irrigation, using sprinklers, for a total of 38 times, providing 832 mm of water. The crop was protected from pests by the application of broad-spectrum, non-systemic, pyrethroid alpha-cypermethrin and dimethoate, after field scouting. All other agronomic and cultural practices were done as recommended for each location.

Results
Combined analysis of variance (ANOVA) at six environments revealed highly significant (P 
 
Publisher CABI
 
Date 2021-10-30
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12756/1/CABI%20Agriculture%20and%20Bioscience_2_1-10_2021.pdf
Ojwang, J D and Nyankanga, R and Rao, N V P R G and Imungi, J (2021) Evaluation of vegetable pigeonpea [Cajanus cajan (L.) Millsp] genotypes for yield stability. CABI Agriculture and Bioscience, 2. pp. 1-10. ISSN 2662-4044