不同生长调节剂处理对卡特兰开花的影响

Effects of Different Growth Regulators Treatment on Cattleya Flowering

通过花鞘注射生长调节剂的方法,研究不同浓度的生长调节剂对卡特兰开花和开花性状的影响,结果表明:注射GA3浓度为60、120 mg.kg-1,卡特兰盛花期显著提前13.34、22.34 d,萼片、花瓣、花柄和花葶的长度显著增加;注射10 mg.kg-1的NAA能够使花期提前,花朵显著增大;注射ABA对卡特兰的花期没有影响,注射ABA浓度为40 mg.kg-1时,开花率下降,花朵缩小。注射60 mg.kg-1的GA3或10 mg.kg-1的NAA不仅能够使花期提前、花朵增大,而且具有较高的开花率,可以作为花期调控的重要手段。

The effects of different growth regulators（GA3,NAA,and ABA） on Cattleya flowering date and flower quality were studied by injecting different concentrations of growth regulators into flower sheathes.The results showed that injecting 60 mg·kg-1 or 120 mg·kg-1 GA3 of resulted in earlier flowering date（13.34 days and 22.34 days,respectively）,as well as significantly increased the lengthes of flower sepal,petal,pedicel and scape,in comparison with controls injected with deionised water.Injecting 10 mg·kg-1 NAA also significantly increased flower size.In contrast,injecting ABA had no influence on flowering date.Moreover,when injecting high concentration of ABA（40 mg·kg-1）,both the flowering rate and flower size were decreased.Overall,injecting 60 mg·kg-1 GA3 or 10 mg·kg-1 NAA,which not only advanced flowering date,but also enlarged flower size and maintained high flowering rate,could serve as a valuable way to regulate the date of floresence.