1984
DOI: 10.2135/cropsci1984.0011183x002400030027x
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Patterns of Reproductive Abscission, Seed Yield, and Yield Components in Soybean1

Abstract: Field studies were conducted in 1981 and 1982 to determine patterns of flowering and reproductive abscission for nodes on the main stem of soybean [Glycine max (L.) Merr.] and to relate these patterns to seed yield components at nodes in various levels of the canopy. ‘Evans,’ an indeterminate, Maturity Group 0 cultivar was used. Individual flowers were tagged at anthesis and monitored through abscission or pod maturity. Date of anthesis and date of flower or pod abscission were recorded. Percent abscission was… Show more

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Cited by 40 publications
(25 citation statements)
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“…Pod number per plant as the yield component was most influenced by changes in cultural and environment conditions Tan 1995, Egli 2005). Heindl and Brun (1984) reported that in indeterminate soybean, there is only a slight variation in the number of flowers formed at each node, and high rate of flower abscission was the major factor determining the pod number per node. Whether light influence on final pod num-ber is from variation of flower or change of pod abscission is still unclear.…”
Section: Resultsmentioning
confidence: 99%
“…Pod number per plant as the yield component was most influenced by changes in cultural and environment conditions Tan 1995, Egli 2005). Heindl and Brun (1984) reported that in indeterminate soybean, there is only a slight variation in the number of flowers formed at each node, and high rate of flower abscission was the major factor determining the pod number per node. Whether light influence on final pod num-ber is from variation of flower or change of pod abscission is still unclear.…”
Section: Resultsmentioning
confidence: 99%
“…Since the magnitude of fl ower abortion varies with the position within plants and racemes (Hansen and Shibles, 1978;Wiebold et al, 1981;Heindl and Brun, 1984;Gai et al, 1984;Saitoh et al, 1999;Kokubun and Honda, 2000), the effects of cytokinin application might be affected by the position on the plant. Further studies are needed to clarify the environmental and physiological conditions under which the positive effects of cytokinin application on pod number and seed yield are expressed.…”
Section: Discussionmentioning
confidence: 99%
“…This showed that shading initiated from the late vegetative stage influenced the final flower number through changing flower abscission at all nodes. Heindl and Brun (1984) reported that there is only a slight variation in the number of flowers formed at each node, and high rate of flower abscission was the major factor determining pod number per node. Our data suggested that environmentally induced variation in pod number in soybean could be a result of changes in number of flowers produced.…”
Section: Spatial Distribution Of Flower/pod Across the Main Axis Undementioning
confidence: 99%
“…There is only a slight variation in the number of flowers formed at each node, and high rate of flower abscission was the major factor determining the pod number per node (Heindl and Brun, 1984). The reduction in pods under shade was a result of fewer flowers per plant and an increase in flower and pod abscission.…”
Section: Effect Of Shade On Flower Pod Number and Yield In Three Soymentioning
confidence: 99%