RESPONSE OF SHORT JUVENILITY VARIETIES TO PHOTOPERIODSⅡ .Response to long daylength(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Title:: RESPONSE OF SHORT JUVENILITY VARIETIES TO PHOTOPERIODSⅡ .Response to long daylength

Author(s):: Yang Zhipan 　Zhang Xiaojuan 　Cai Shuping 　Qu Dezheng 　Wang Guoxun 　Zhou Xinan; Inst itute of Oi l Crops , CAAS , Hubei Wuhan , 430062

Abstract:: Including tw o sho rt juvenility varieties , eight soybean varieties were used to observe the response ofdays f rom emergence to f low ering (Ve —R1)and days from f lowering to maturity (R1 —R8), under artif icialphotoperiod treatment , af ter the response to different sow ing dates and short day -leng th of these varieties wasstudied .The objects w ere to identify the characteristic of response of short juvenility varieties to photoperiods.The results under long day -leng th t reatment show ed that the day s form emergence to f lowering of two sho rt juvenility varieties, Zhongdou No .24 and Jufeng , w ere most sensitive to long day -length among all eig ht soybeancultivars .But the long day -length sensitivity to day s f rom flow ering to maturity of the two varieties w asdifferent .The number of days from R1 to R8 of Zho ngdou No .24 w as elongated , that of Jufeng w as shortened .Through the response analysis of short juvenili ty varieties to 30 d and 60 d long day -length , it w as observed tha7 -9 d and 15 -18 d short photoperiods were need respectively for the two varieties to flow er af ter long photoperiod.The temperature sensitivity of Ve —R1 of short juvenility variet ies Jufeng under long day leng th wasdifferent f rom that of Zhongdou No .24 .

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Last Update: 2016-12-29