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Physiological Basis of Yield Variation in Short-duration Pigeonpea Grown in Different Environments of the Semi-Arid Tropics

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Relation http://oar.icrisat.org/2839/
http://dx.doi.org/10.1111/j.1439-037X.1995.tb01099.x
 
Title Physiological Basis of Yield Variation in Short-duration Pigeonpea Grown in Different Environments of the Semi-Arid Tropics
 
Creator Chauhan, Y S
Johansen, C
Saxena, K B
 
Subject Pigeonpea
 
Description Five short-duration pigeonpea (Cajanus cajan (L.) Millsp.) genotypes were grown at three plant populations in three locations during the 1986 and 1988 rainy seasons, to determine the physiological basis of observed variations in yield. Significant differences were found in seed yield (Y), crop growth rate (C), and the durations of vegetative (Dv) and reproductive (Dr) growth, and partitioning (P). These were attributable to genotypes and their interactions with environments (except for C). Variation in C, Dr, and P together explained 78 % of the observed variation in Y due to different genotypes and environments. Crop growth rate alone contributed about 71 % of the variation in Y, and reached an optimum value of around 6.5 kg ha−1°Cd−1. Crop growth rates increased with the duration of the vegetative period and with plant population. However, a negative relationship between C and P resulted in plant population having little effect on seed yield. The maximum-yielding genotype, ICPH 8 had the highest C and an intermediate P
 
Publisher Wiley-Blackwell
 
Date 1995
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/2839/1/Physiological%2520Basis%2520of%2520Yield%2520Variation.pdf
Chauhan, Y S and Johansen, C and Saxena, K B (1995) Physiological Basis of Yield Variation in Short-duration Pigeonpea Grown in Different Environments of the Semi-Arid Tropics. Journal of Agronomy and Crop Science, 174 (3). pp. 163-171. ISSN 1439-037x