论文部分内容阅读
野生棉种原产于热带和亚热带低纬度南方,在长期系统发育过程中,形成了短日性的遗传型,当它被引入日照较长地区后,由于长日条件的影响,发育受到抑制,就不能现蕾开花。因此,认识野生棉种对光周期的反应,将有助于把野生棉种的某些特性转移到栽培棉种上,从而可得到抗病或抗虫的品种。 1978～1979年我们观察了光周期长短对棉属几个野生种生长发育的影响,现将研究结果分述如下。
Wild cotton species native to the low latitudes of the tropics and subtropics in the South, in the long-term system development, the formation of short-day genetic type, when it is introduced into the longer sun, due to long-term conditions, the development is inhibited, You can not flower bud. Therefore, understanding the response of wild cotton species to the photoperiod will help to transfer some of the properties of the wild cotton species to the cultivated cotton species so that disease-resistant or insect-resistant varieties can be obtained. From 1978 to 1979, we observed the effects of photoperiod length on the growth of several wild species of Gossypium, and the results are summarized as follows.