论文部分内容阅读
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V_5前是3.5天,在V_5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R_1和R_2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。
In this study, we used 10 cultivars of finite and 10 infinitive (or sub-finite) cultivars to record soybean growth stages in Pantnegar, India with reference to Fehr and Caviness (1977). The results showed that during vegetative growth, the number of days from one growth stage to another was 3.5 days before V_5 and 3.0 days after V_5. There is no difference between soybeans with different growth habits. After flowering, the limited type only continue to grow 1-2 sections, and some even stop growing; while the unlimited varieties continue to extend the number of sections. R_1 and R_2 of the limited varieties appeared at the same time, and there was a sufficient interval between these two stages of the infinite variety. In general, the limited varieties of flowering and maturity than the infinite type of early varieties.