不同大豆品种对赤霉素的敏感性研究【字数:6554】
目录
摘要III
关键词III
AbstractIV
引言
1选题背景1
2文献综述1
1.1大豆的生产 1
1.2赤霉素的合成与作用机理1
1.3赤霉素的功能与应用3
1.4赤霉素对大豆生长发育的影响4
3方案论证5
4材料与方法5
5 结果与分析6
6讨论6
致谢7
参考文献7
不同大豆品种对赤霉素的敏感性研究
摘 要
大豆是世界上最重要的油料作物和主要经济作物之一,也是植物蛋白的主要来源。当前我国大豆产业形势严峻,鉴定并合理利用优质大豆种质资源对大豆遗传改良具有重要意义。作为五大类植物激素之一的赤霉素在植物生长发育过程中对株高等性状具有极其重要的调控作用。本课题以12份不同大豆种质资源为研究对象,分析了外施赤霉素对其株高的影响。结果表明,不同大豆品种对赤霉素的敏感性不同,3186对赤霉素最敏感,外施赤霉素9天后的茎生长量是清水对照条件下茎生长量的4.6倍;而Q0907对赤霉素最不敏感,外施赤霉素9天后的茎生长量是清水对照条件下茎生长量的1.8倍。本实验为进一步探寻赤霉素和优良性状之间的关系、更好利用优良大豆种质资源奠定基础,并为提高大豆产量等相关研究提供参考。
Study on the Sensitivity of Different Soybean Varieties to Gibberellin
ABSTRACT
Soybean is one of the major oil crops in the world, which is also the main source of plant protein. With the increasing demand of soybean in recent years, it is of great significance to exploit superior soybean germplasm resources for soybean genetic improvement. G *51今日免费论文网|www.jxszl.com +Q: #351916072#
ibberellin, one of the five plant hormones, plays an important role in the regulation of plant growth and development. In this study, the effect of external application of gibberellin on plant height of 12 different soybean varieties was analyzed. The results showed that the sensitivity of different soybean varieties to gibberellin was different, 3186 was the most sensitive variety to gibberellin, whose stem growth after 9 days of external application of GA3 was 4.6 fold of that under control (water) condition; and Q0907 was the least sensitive one to gibberellin, whose stem growth after 9 days of external application of GA3 was only 1.8 fold of that under control condition. This experiment laid a foundation for further exploring the relationship between gibberellin and agronomic traits, which provides references to utilize soybean germplasm for improving soybean yield and other related studies.
KEY WORDS:soybean;gibberellin;plant height;sensitivity1 选题背景
作为世界主要经济作物之一,大豆是世界上最重要的油料作物,同时也是植物蛋白的主要来源。大豆富含丰富的营养,实用价值极高。中国是大豆的起源地,拥有丰富而优质的大豆种质资源,但在目前形势下,我国大豆生产方面的研究仍有待推进。生长素、赤霉素、细胞分裂素、脱落酸、乙烯作为植物五大类植物激素,在植物生长发育的整个阶段,都起到了非常重要的作用。不同的植物激素具有不同的功能,其中赤霉素在植物生长发育过程中对植株株高具有极其重要的调控作用。第一次绿色革命中水稻与小麦的株高优质矮秆资源均是与赤霉素编码合成通路相关的关键基因已被发现,其在提高全球主要粮食作物产量中发挥了重要的作用。
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