Daylength responses, flowering time, and seed filling in lupins

摘要: Narrow-leafed lupin (Lupinus angustifolius) is now an established major crop in southern Australia, albus lupin (L. albus) is grown on a smaller scale, and there is interest in cultivating other lupin species. With any new crop, it is crucial that its phenology, particularly times of flowering and maturity, matches the target environment. We investigated times of flowering, maturity, and seed filling of several lupin species of agricultural interest to southern Australia. Established genotypes of L. angustifolius and L. albus flowered earliest, in 70-75 days, but L. luteus cv. Teo and some L. angustifolius lines with restricted branching matured earliest. Differences between genotypes in rates of seed filling and final seed weights meant that time of maturity was only poorly correlated with flowering time. We investigated the role of photoperiod in the timing of flowering and maturity in 12 lupin species/genotypes by: (a) growing plants …