大豆开花逆转现象的发现  

Discovery of Flowering Reversion in Soybean Plants

作　　者：韩天富[1] 盖钧镒[2] 王金陵[1] 周东兴 

机构地区：[1]东北农业大学大豆研究所,黑龙江哈尔滨150030 [2]南京农业大学大豆研究所,江苏南京210095

出　　处：《作物学报》1998年第2期168-171,T001,共5页Acta Agronomica Sinica

基　　金：国家自然科学基金;中国博士后科学基金

摘　　要：晚熟大豆品种自贡冬豆出苗后进行8～10d短日照(12h)处理,尔后置长日照(>15h)下,可诱导顶端花序的产生,但花序的上部因短日照后进行的长光照处理而形成茎,花序中部少数花芽原基转而分化营养芽。这是长光照诱导的花序逆转和花逆转现象在大豆中的首次发现。已经短日诱导正常开花的自贡冬豆植株转移至长日照下时,原有花荚大部分脱落,不定芽大量发生,恢复到以营养生长为主的状态。本文将此种现象称为整株逆转(overall reversion)一植物开花逆转现象的一种新类型。大豆开花逆转现象的发现,对于研究大豆个体发育规律和结荚习性的形成具有一定意义,并可望建立植物光周期反应机制研究的实验材料系统。Seedlings of a late-maturing soybean variety, Zigongdongdou(ZGDD), were treated with 8 to 10 short days(SD) of 12h immediately after the emergence, and then trans ferred to long days (LD)(>15h). Terminal inflorescence(raceme)could be induced by SD, but the upper part of the inflorescence became stem, and a few floral primordia in the middle part of the inflorescence reversed to differentiate vegetative buds, because of the following LD after the SD induction. The phenomena mentioned above were the LD-induced inflorescence reversion and flower reversion in soybean plants. If the normal flowering plants of ZGDD were transferred from SD to LD, the existed flowers and pods fell, fewer new flowers developed and the plants re turned to vigorous vegetative growth. This phenomenon was designated by the name of overall reversion, a new type of flowering reversion in plants. It was proposed that the discovery of flowering reversion is valuable in the study of pod bearing habbit and ontogeny of soybean plants, and will be helpful to establish a new system of experimental material in the study of photoperiod responses of plants.

关 键 词：大豆 开花逆转 光周期 

分 类 号：S565.101[农业科学—作物学]