不同夏玉米品种产量及农艺性状分析  

Yield and agronomic characteristics of summer maize varieties

作　　者：邱博[1] 罗水清[1,2] 陈平平[1,2] 罗红兵[1,2,3] 刘伟华[1] 

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]湖南农业大学南方粮油作物协同创新中心,湖南长沙410128 [3]湖南省玉米工程技术研究中心,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2016年第1期11-15,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南省农业科学委员会科研项目;湖南省科技计划项目(2013TP4096);长沙市科技计划项目(K1406002–61)

摘　　要：以临奥9号、科玉2号、奥玉28、三北2号、三北89、中单808、帮豪玉108、渝单7号、科玉6号、荃玉9号、中科10号、登海11号、联创9号、同玉18、钻卡巴巴、泰玉12、湘农玉14号和奥玉3102等18个夏玉米品种以及临奥1号(CK)为材料,比较了品种间的产量,并对产量与农艺性状进行相关分析和通径分析。结果表明:三北89和中单808产量较高,分别为521.2 kg/(667 m2)和468.3 kg/(667 m2),比CK分别增产16.4%和4.6%,有望成为湖南夏玉米推广的主要品种;行粒数、穗长、株高、穗位高、百粒重、穗行数等农艺性状对产量有正相关影响,与产量的相关系数分别为0.887、0.845、0.691、0.682、0.395和0.207;通过多元回归分析,剔除了对产量影响无统计学意义的性状,对产量有显著正相关影响的性状行粒数、百粒重和穗行数与产量的通径系数分别为0.889、0.325和0.286,因此,选择品种应综合考查行粒数、百粒重和穗行数的关系,主抓行粒数,同时兼顾百粒重和穗行数。19 summer maize varieties of Lin＇ao No.9, Keyu No.2, Aoyu 28, Sanbei No.2, Sanbei 89, Zhongdan 808, Banghaoyu 108, Yudan No.7, Keyu No.6, Quanyu No.9, Zhongke No.10, Denghai No.11, Lianchuang No.9, Tongyu18, Zuankababa, Taiyu No.12, Xiangnongyu No.14, Aoyu 3102 and Lin＇ao No.1（as control） were selected as experiment material and randomized block was designed to compare their yields and analyze correlation between yield and agronomic characteristics. The results showed that Sanbei 89 and Zhongdan 808 had the top yields of 521.2 kg/（667 m2） and 468.3 kg/（667 m2）, which were 16.4% and 4.6% higher than the control, respectively, it will be the main promotion varieties of summer maize in Hunan province. Kernels per row（r=0.887）, ear length（r=0.845）, plant height（r=0.691）, ear height（r=0.682）, 100-grain weight（r=0.395） and rows per ear（r=0.207） had a positive correlation with yield. The traits, which had no significant effect on yield, were removed through multiple regression analysis. Kernels per row, 100-grain weight and rows per ear were significant positively correlated with yield, showing path coefficients of 0.889, 0.325 and 0.286, respectively. In consequence, selection of maize variety should comprehensively consider the relationships among kernels per row, 100-grain weight and rows per ear, focusing on kernels per row and meanwhile giving consideration to 100-grain weight and rows per ear.

关 键 词：夏玉米 产量 农艺性状 相关性分析 通径分析 

分 类 号：Q789.01[生物学—分子生物学]