6533b85cfe1ef96bd12bc852

RESEARCH PRODUCT

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R. J. SummerfieldPeter CraufurdH.s. SokoJ. K. Jones

subject

biologyField experimentPlant physiologySowingPlant ScienceHorticulturebiology.organism_classificationGenetic analysisCajanusHorticultureBotanyGenotypeGeneticsTraitAdaptationAgronomy and Crop Science

description

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.

yearjournalcountryeditionlanguage
2001-01-01Euphytica
https://doi.org/10.1023/a:1017523010262