The field pea crop in s. w. [southwestern] Australia, 2. Effects of contrasting morphology and environment on reproductive performance
1994
Armstrong, E.L. (New South Wales Agriculture, Wagga Wagga (Australia). Agricultural Research Inst.) | Pate, J.S. (Western Australia Univ., Nedlands. Dept. of Botany and Cooperative Centre for Legumes in Mediterranean Agriculture)
Reproductive performance of 6 field pea (Pisum sativum) genotypes was assessed at 3 contrasting field sites in Western Australia and under optimal conditions in a glasshouse. Seed yields at the field sites increased generally in relation to rainfall during the growing season (May-October). Superior performance at Mt Barker was related to greater biomass and green area index and higher number of reproductive nodes and pods per plant, but not to increased branches per plant, pods per nodes, seeds per pod or seed size. Improved harvest index, larger seeds and greater reproductive yield from basal and aerial branches were responsible for the trellised well-watered and fertilized glasshouse plants mostly outyielding those at the field sites. Field-site specific superiority of certain genotypes over others was evident. Poor seed fields of tall types relative to their vegetative biomass were pronounced at Mt Barker due to poor fruit set and seed filling in the severely lodged and self-shaded canopies. Data are discussed in relation to previous cultivar evaluations and ideotype prescriptions by other workers in Australia and overseas
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