【摘要】 本文以10个有限型和10个无限型（或亚有限型）栽培大豆品种为材料,参照Fehr和Caviness（1977）的方法,记载了印度Pantnegar地区大豆的各个生育阶段。结果表明:在营养生长期间,从一个生长阶段到另一个生长阶段的间隔天数在V₅前是3.5天,在V₅后是3.0天。不同生长习性的大豆之间没有差别。开花后,有限型品种只继续生长1～2节,有的甚至停止生长;而无限型品种则继续性伸长数节。有限型品种的R₁和R₂同时出现,无限型品种的这两个阶段之间则有足够的间隔时期。总的讲,有限型品种的开花和成熟都比无限型品种早。更多还原

【Abstract】 Soybean cultivars differ in growth habit like determinate (dt1), semideterminate (Dt2) or indeterminate (Dt1). (Bernard, 1972). Bernard (1972) also reported that determinate cultivars have predominated in Japan, Korea and Southern USA, whereas indeterminate soybean cultivars have been growh in northeast China and Northern USA. Practically no work has been done in the tropical situation to characterise the deteminate and indeterminate soybean in terms of stages of plant development. Therefore, an experiment involving 10 determinate and 10 semi/indeterminate soybaen cultivars was undertaken.更多还原