干旱地区农业研究2018，Vol.36Issue(3)：17-22,6.DOI:10.7606/j.issn.1000-7601.2018.03.03
灌水处理对黄冠梨叶片结构和激素含量及PbDREB基因表达的影响
Effects of different irrigation mode on leaf structure, hormone content, and the gene PbDREB expression of Huangguan pear
摘要
Abstract
The experiment of six irrigation models had been conducted in an orchard of 9 year-old 'Huang-guan' pear.The profile structure,hormone content and the expression of drought resistant gene DREB of leaves were measured.The results showed that there was a positive correlation existed irrigated times or depth and the leaf thickness,cuticle thickness,stockade tissue thickness and CTR under the same irrigated water amount; There was a significant positive correlation between irrigation amount and the expression of the drought resistant gene DREB,T5(drip irrigation under plastic mulch,irrigated 9 times and each time water move down to 60 cm depth of soil,annual irrigation water at 6750 m3·hm-2)had the high CTR and the lowest SSR.The CTR reached to 32.90％and the SSR reached to 43.62％.It also had high content of the ABA,relatively lowest content of GA,IAA,ZR,and the content of the ABA reached to 118.87 ng·g-1(fresh weight).And it had high expression of the drought resist-ant gene DREB,the content of DREB expression reached to 2.75.In conclusion,T5 could improve the CTR,pro-mote ABA synthesis,and increase the expression of the drought resistant gene DREB,thus improve the drought re-sistance of the leaves.There by it should be the suitable water-saving irrigation model for the pear orchard at Jingtai County in Gansu Province.关键词
黄冠梨/节水灌溉/叶片组织结构/激素/DREBKey words
Huangguan pear/water-saving irrigation/leaf tissue/hormone/DREB分类
农业科技引用本文复制引用
黄海娜,杨金宇,李红旭,刘小勇,叶振风,朱立武,衡伟..灌水处理对黄冠梨叶片结构和激素含量及PbDREB基因表达的影响[J].干旱地区农业研究,2018,36(3):17-22,6.基金项目
国家现代农业产业技术体系建设专项(CARS-29-14) （CARS-29-14）
国家自然科学基金(31101519). （31101519）
