Analysis on High and Stable Yield of New Wheat Variety Luyuan 502 and Breeding Enlightenment
Li Xinhua
Li Peng
Gao Guoqiang
Zhang Fengyun
Sun Mingzhu
Abstract：Luyuan 502 , a new wheat variety with high yield and wide adaption , was bred by the Institute for Application of Atomic Energy of Shandong Academy of Agricultural Sciences and the Institute of Crop Sci -ences of Chinese Academy of Agricultural Sciences .The analysis on high and stable yield of Luyuan 502 was carried out according to the data from the National and Provincial Wheat Regional Tests .The results were as follows.The yield components of Luyuan 502 had high regulating ability .The average yield of Luyuan 502 in Shandong, Hebei and Shanxi regional tests were 574.3, 517.1 and 526.9 kg per 666.7m2, respectively, and were 11.21%, 8.40%and 7.65%higher than that of the control variety , which reached the significant lev-el.Luyuan 502 showed the property of high yield .The variation coefficient of Luyuan 502 in the north Huang-Huai winter wheat area tests , was lower than that of Shunmai 1718 and Shi 4185 , but higher than that of Han 6172 , so Luyuan 502 showed the characteristic of stable yield , too.It indicated that the main breeding objectives of Shandong Province should be increasing the grain number per spike , improving plant type , en-hancing lodging-resistance ability and harvest index .These 3 yield components were optimal with the number of spike above 400 thousand , the grain number per spike above 40 and the 1 000-grain weight above 45 g.
Keywords：WheatLuyuan 502High yieldStable yieldBreeding enlightenment
Publication Date：2015-05-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 15-18 )