摘要
１９９３～１９９４年研究了田间生长条件下５个玉米杂交种棒３叶的光合强度（Ｐａ）、比叶重（ＳＬＷ）、叶氮量（ＮＬＡ）、叶肉厚度（ＬＴ）、气孔密度（ＳＦ）、维管束密度（ＶＢＦ）等光合性状。结果表明：（１）各杂交种棒３叶的Ｐａ高峰均出现在吐丝期，不同杂交种从吐丝期到成熟期的Ｐａ动态变化不同，ＳＬＷ、ＮＬＡ的动态变化趋势相似。（２）不同玉米杂交种的Ｐａ、ＳＬＷ、ＮＬＡ、ＬＴ、ＳＦ、ＶＢＦ表现差异显著。（３）玉米吐丝期棒３叶的ＳＬＷ、ＮＬＡ、ＬＴ、ＳＦ、ＶＢＦ与Ｐａ均呈显著正相关，对棒３叶Ｐａ的贡献是：ＮＬＡ＞ＳＬＷ＞ＬＴ＞ＳＦ＞ＶＢＦ。（４）Ｐａ、ＳＬＷ、ＮＬＡ、ＭＦ属于数量性状遗传，ＳＦ、ＶＢＦ属于质量性状遗传。
Apparent photosynthetic rate(PR),specific leaf weight (SLW),nitrogen contents of leaf(NCL),leaf thickness(LT),stomatal density (SD) and vascular bundle density(VBD) were determined for three earleaves of corns that grew in a field in 1993-1994.The results showed:(1)dynamic change of different hybrids varied from silking stage to maturity, the tendency of SLW and NCL was similar;(2)the difference of PR,SLW,NCL,LT,SD and VBD was significant for different hybrids;(3)SLW,NCL,LT,SD and VBD of three earleaves were positively correlated with PR at silking stage, the contribution of which to three earleaves was NCL>SLW>LT>SD>VBD;(4)PR,SLW,NCL and LT belonged to quantitative heredity, SD and VBD belonged to qualitative genetics.
出处
《华北农学报》
CSCD
北大核心
1997年第4期73-77,共5页
Acta Agriculturae Boreali-Sinica
关键词
玉米
棒3叶
光合性状
相关性
Corn
Three earleaves
Photosynthetic character
Correlation
