种子引发处理对棉花种子发芽的影响  

The Effects of Seed Priming Treatment on the Cotton Seeds Germination

作　　者：李卫华[1] 黄丙香[1] 王振华[1] 李晓明[1] 张东海[1] 

机构地区：[1]石河子大学农学院,新疆石河子832003

出　　处：《种子》2006年第1期26-30,共5页Seed

摘　　要：对新疆棉花主栽品种“新陆早10号”种子采用不同的处理方法,调查了各处理种子发芽速度、发芽整齐度、发芽试验及种苗萌发试验。结果表明:6种不同水合时间和水量的处理中,6 h的水合时间处理获得了最高的发芽势和发芽率、较好的发芽整齐度和较快的发芽速度,是较为理想的水合处理方法。棉花种子的引发处理能够有效的提高种子活力、加速种苗萌发、提高种子发芽整齐度和发芽率。其中大分子PEG盐渗处理(OP)在加快种子发芽和种苗萌发的速度上显著优于未处理种子,略优于6 h水合处理;而水合处理(HP)在提高种子的发芽势、发芽率及最大发芽率方面显著优于OP和未处理种子。但HP和OP处理后种子的畸形苗和染病种苗率显著上升,这与前人的报道结果相一致。有关棉花种子引发处理与种带病原菌的发生间的关系有待进一步研究。By investigating the speed, uniformity, parameters of germination test and seedling emergence of cotton variety “Xinluzao-10” seeds using different seed priming methods, the results showed that hydrated for 6h in Perspex columns was the best hydropriming method with highest enery of germination and Gmax, lowest U90-10 and lower T value. After seeds priming, the speed of germination .and emergence was accelerated, the uniformity and geimination capacity were improved. Especially, osmopriming was better on accelerating the speed of germination and emergence, however, hydropriming for 6h hydrated time was better on improving the uniformity and geimination capacity. But, a considerable increase in the percentage of abnormal seedlings and diseased seedlings was observed after HP and OP priming. This was fall in the same results with former＇s. The relationship between seed priming and the infestation of seed-born fungi would be furtner studied.

关 键 词：棉花 水合处理 盐渗处理 发芽试验 种苗萌发 

分 类 号：S641.3[农业科学—蔬菜学] TS223.2[农业科学—园艺学]