NH_4^+浓度对棉花未受精胚珠纤维离体发育的影响  

Effects of NH_4^+ concentration on fiber development from unfertilized cotton ovules in vitro .

作　　者：蒋淑丽[1] 郑泗军[1] 洪彩霞[1] 许馥华 

机构地区：[1]浙江大学农学系,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》1999年第4期353-356,共4页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省自然科学基金

摘　　要：棉花胚珠离体诱导纤维的发育 不但在基因型之间存在着很大的差异，而且 Ｎ Ｈ４ ＋ 浓度明显影响离体纤 维的诱导率⒚在以 Ｎ Ｏ３ － ５０ ｍ ｍ ｏｌ／ Ｌ 为氮源的基础上，添加低 浓度（５．０ ｍ ｍ ｏｌ／ Ｌ）的 Ｎ Ｈ４ ＋ ，能提高纤维的诱导率，促进纤维的生长⒚在总氮量不变的条件下，提高 Ｎ Ｈ４ ＋ ／ Ｎ Ｏ３ － 的比例，纤维的诱导率随之降低。The fiber inducing and development in vitro was affected not only by the genotypes of the explant used, but aslo by the NH 4 + concentration . There were obvious effects of the NH 4 + concentration on the fiber inducing percentage,which was increased dramatically when a lower concentration of NH 4 + ( 5.0 mmol/L) was added in the media with 50 mmol/L of NO 3 -, The fiber inducing percentage was decreased and the fiber development was inhibited as the ratio of NH 4 +/NO 3 - in the media was increased when the total nitrogen contents were constant.

关 键 词：棉花 氨离子浓度 未受精胚珠 纤维离体发育 

分 类 号：S562.035[农业科学—作物学]