Influence of daylength on yield-determining processes in six groundnut cultivars (Arachis hypogaea)

Witzenberger , A and Williams, J H and Lenz, F (1988) Influence of daylength on yield-determining processes in six groundnut cultivars (Arachis hypogaea). Field Crops Research, 18 (2-3). pp. 89-100. ISSN 0378-4290

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Abstract

The vegetative and reproductive growth of six groundnut genotypes (Arachis hypogaea L.) in two photoperiods were studied in a field experiment. Normal daylength was 11–13 h and long-day conditions (15–16 h) were provided by extending the day with tungsten-filament bulbs. Yield differences between the photoperiodd treatments were largely explained by changes in crop growth rate, partitioning, and the length of the effective pod-filling period. Long days resulted in increased crop growth rates but generally decreased partitioning and the duration of the crops' effective pod-filling phase. However, it was dependent on the genotype which of the yield-determining processes had been more influenced by day-length conditions. In some cases, partitioning contributed most to yield ifference; in others, the duration of the effective pod-filling phase contributed most.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Groundnut Others > Agriculture-Farming, Production, Technology, Economics
Depositing User:	Mr B K Murthy
Date Deposited:	09 Jun 2014 04:03
Last Modified:	09 Jun 2014 04:03
URI:	http://oar.icrisat.org/id/eprint/8088
Official URL:	http://dx.doi.org/10.1016/0378-4290(88)90001-9
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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