Inheritance of duration from sowing to first flowering in pigeonpea |
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| Authors: | PQ Craufurd HS Soko JK Jones RJ Summerfield |
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| Institution: | (1) Plant Environment Laboratory, Department of Agriculture, The University of Reading, Cutbush Lane, Shinfield, Reading, RG2 9AD, UK;(2) Department of Agricultural Botany, School of Plant Sciences, The University of Reading, Whiteknights, Reading, RG6 2AS, UK |
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| Abstract: | Duration from sowing to flowering is the most important trait influencing adaptation in pigeon pea (Cajanus cajan), but the inheritance of this trait has not been elucidated clearly. Crosses were made between two early (60 to 70d) and
one late (160 to 170d) flowering pigeonpea genotype and F1, F2 and BC1 populations produced. These populations, comprising 60 to 100 parents, 30 F1, 400F2 and 40 to 50 BC1 plants, were grown under natural (mean13.4 hd-1) and artificially extended (to 15 hd-1) daylength and duration from sowing to first flowering recorded. Genetic analysis of the segregation ratios, supported by
Chi-square tests, indicated that the duration from sowing to flowering in each of the crosses was controlled by two genes
assorting independently and with predominantly additive quantitative effects. The segregation patterns were most clearly defined
in the 15 hd-1 daylength.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | flowering inheritance pigeonpea |
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