西南区玉米品种的产量性能及稳定性评价的秩次分析法

用秩次分析法分别对参加2003-2005年中国西南区玉米区域试验1组和2组的各品种进行产量性能和稳产性评价.结果表明,1组25个品种中中单808、渝单8号和遵玉8号表现高产且稳定性强,辽127和YA04273表现高产但稳定性中等.2组29个品种中DH3831、GM4095和鑫丰1号表现高产且稳定性强,承玉15、东4243、X1152A、DH3838、DH3632和奥试3202表现高产但稳定性中等.其中,中单808、渝单8号、遵玉8号、辽127、DH3831、东4243、X1152A、DH3838、DH3632和奥试3202这些品种分别在2004年和2005年通过国家审定,在实践上证明秩次分析法能客观、公正地对品种的产量性能和稳定性进行评价.建议用加权法计算品种秩次平均数和秩次方差的平均数、标准差和50%置信度的置信下限和置信上限.

Evaluation of Yield Performance and Stability of Maize Varieties in Southwestern China Using Rank Analysis Method

Yield performance and stability of each maize variety joining in the regional trials （including Group 1 and Group 2） in Southwestern China during 2003 to 2005 were appraised using rank analysis method separately.It was shown that Zhongdan 808,Yudan 8,Zunyu 8 were high yielding and primary stable varieties,and Liao 127 and YA04273 were high yielding and secondary stable varieties for Group 1.For Group 2,DH3831,GM4095 and Xinfeng 1 were high yielding and primary stable varieties,and Chenyu 15,Dong 4243,X1152A,DH3838,DH3632 and Aoshi 3202 were high yielding but secondary stable varieties.Among these varieties,Zhongdan 808,Yudan 8,Zunyu 8,Liao 127,DH3831,Dong 4243,X1152A,DH3838,DH3632 and Aoshi 3202 were authorized nationally in 2004 and 2005 separately.It was implied that rank analysis method could be applied to appraise objectively and justly yield performance and stability of maize varieties.However,we suggested that mean,standard deviation,confidence lower limit and upper limit（50%confidence level） for rank mean and rank variance of maize variety would be estimated using weighted method.