论文部分内容阅读
本文研究了棉花种子发芽过程中，子叶内储藏物质代谢及外源赤霉素的调节。结果表明，赤霉素促进了脂肪的降解，子叶中可溶性糖的含量增加；同时影响了蛋白质代谢过程中氨基酸含量的变化，显著地促进了天门冬氨酸含量的增加，而明显地降低了谷氨酸的含量。赤霉素影响了棉苗干物质的分配，对子叶的发育有促进作用，而对胚根（２４ｈ后）和下胚轴（４８ｈ）的发育有抑制作用。从整体上讲，赤霉素可以促进棉花种子胚根突破种皮和迅速均匀出苗。但是由于赤霉素后期（４８ｈ）抑制了下胚轴和胚根的发育，不利于棉花立苗，降低了棉苗抵抗外界不良环境的能力，从而不利于棉花培育壮苗
In this paper, the cotton seed germination process, the cotyledons within the storage material metabolism and gibberellin regulation. The results showed that gibberellin promoted the degradation of fat and the content of soluble sugar in cotyledons increased. At the same time, it affected the change of amino acid content in protein metabolism, promoted the increase of aspartate content obviously, Amino acid content. Gibberellin affected the distribution of dry matter in cotton seedlings and promoted the development of cotyledons, but inhibited the development of radicle (24h) and hypocotyls (48h). On the whole, gibberellin can promote cotton seed radicle breakthrough seed coat and rapid uniform emergence. However, due to the late gibberellin (48h) inhibited the development of hypocotyls and radicles, is not conducive to cotton seedlings, reducing the ability of cotton seedlings to resist the adverse environment, which is not conducive to the cultivation of strong cotton seedlings