摘要
采用成对比较假设测验，通径分析及Ｓ·Ａ·Ｅｂｅｒｈａｒｔ—Ｗ·Ｌ·Ｒｕｓｓｅｌｌ方法，分析了小麦新品种川育１２在四川、云南、贵州三省４６个不同地点的产量、产量构成因素及其稳定性。结果表明：川育１２属高产稳产型品种，增产潜力大．适应性广。产量与单位面积穗数、穗粒数、千粒重的多元回归方程为：ｙ＝－１９６８．１５０＋１９５．０６３Ｘ１＋４５．２４０Ｘ２十２４．４０８Ｘ３。单位面积穗数对产量的效应最大，偏相关系数ｒ１ｙ＝０．８６６３，通径系数Ｐ０１＝０．９８００，其次是穗粒数，偏相关系数及通径系数分别为０．７４３１和０．６５３０；千粒重效应最小，其偏相关系数及通径系数分别为０．５２３６，Ｏ．１６７０。因此，适当增加基本苗，扩大群体，提高单位面积穗数，增加穗粒数，可以充分发挥该品种的增产潜力，获得高产。
The yield component factors and their stability of new wheat variety Chuanyu No.12 were analysed on the basis of the data from 46 different experiments locations in three provinces including Sichuan, Yunnan and Guizhou by using hypothetical paired comparison,path analysis and S·A·Eberhart-W·L·Russell's method.The results showed that Chuanyu No.12 belonged to the variety that having high and stable yield.It Possessed high potential in increasing production and wide adaptability.The multiple regression equation of yield to effective spike,grains/spike and 1000-grain weight was y=-1968.150+195.063X1+45.240X2+24.40X3.The effective spike had the highest effect on yield with partial correlation coefficient r1y.=0.8663,path coefficient Po1=0.9800.Grains/spike would fully play the potential in increasing production of Chuanyu No.12.
出处
《西南农业学报》
CSCD
1995年第3期7-11,共5页
Southwest China Journal of Agricultural Sciences
关键词
小麦
川育12
产量构成
稳定性
Wheat Chuanyu No.12 Yield components Stability
