矮壮素与乙烯利对燕麦株高、产量及其构成因素的调节作用  

Effects of plant growth regulator on plant height,yield and yield components of oat

作　　者：龚建军[1] 赵桂琴[1] 马雪琴[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《草业科学》2008年第5期74-77,共4页Pratacultural Science

基　　金：农业行业科研专项项目(nyhyzx07009-06);农业部"948"燕麦项目(2006-G10)

摘　　要：通过在燕麦Avena sativa拔节期喷施1%的矮状素和10%乙烯利,研究生长调节剂对不同燕麦品种株高、节间长度、分蘖成穗、产草量和种子产量等性状的影响。结果表明,矮壮素处理后,燕麦株高比对照降低了10～12 cm;品种4628基部节间受影响最大,矮壮素和乙烯利处理后其倒四节间长度有显著下降,仅为对照的58.2%和64.8%。矮壮素和乙烯利处理下燕麦干草和鲜干比变化也比较大,不同品种对2种调节剂的反应不同。喷施生长调节剂后燕麦成穗有显著增加,但穗长、穗粒数有减少的趋势,对千粒重也有影响;种子产量有所增加。3个品种中以4628进行矮壮素处理的效果较好,有效穗数和产量与对照相比显著增加。Effects of plant growth regulator on plant height and yield formation of oat（Avena sativa） were studied by spraying 1% CCC and 10% Ethephon at stem elongation stage.The result showed that plant height decreased significantly（10 to 20 cm） compared with the control under CCC treatment 4628 reduced internode length by 58.2% and 64.8% under CCC and ETH treatment,respectively.Both regulators significantly increased effective tillers and reduced panicle length and grains per panicle,also had effects on thousand grain weight;grain yield increased.Among 3 varieties,4628 gave the best performance under CCC treatment,its effective tillers and yield increased significantly compared with the control.

关 键 词：燕麦 植物生长调节剂 株高 产量 产量构成因素 

分 类 号：S543.7[农业科学—作物学]