玉米-大豆带状种植中套作高光效玉米窄行穂位叶光合特性对弱光胁迫的响应

任永福,陈国鹏,蒲甜,陈诚,曾瑾汐,彭霄,马艳玮,杨文钰,王小春

Responses of photosynthetic characteristics to low light stress in ear leaves of high photosynthetic efficiency maize at narrow row of maize-soybean strip intercropping system

Yong-Fu REN,Guo-Peng CHEN,Tian PU,Cheng CHEN,Jin-Xi ZENG,Xiao PENG,Yan-Wei MA,Wen-Yu YANG,Xiao-Chun WANG

表4 光合参数之间及其与产量的相关关系

Table 4 Correlation between photosynthetic parameters and yield

	光合速率 Photosyn- thetic rate	气孔导度 Stomatal conductance	胞间CO₂浓度 Intercellular CO₂concentration	蒸腾速率 Transpiration rate	穂粒数 Grain number per ear	千粒重 1000-kernel weight	穗数 Ear number (×10⁴ hm^-2)	产量 Yield
Photosynthetic rate	1.00	0.99^**	-0.80^**	0.90^**	0.54^*	0.39	0.53^*	0.62^**
Stomatal conductance		1.00	-0.82^**	0.92^**	0.58^*	0.37	0.54^*	0.65^**
Intercellular CO₂concentration			1.00	-0.97^**	-0.74^**	-0.24	-0.47	-0.73^**
Transpiration rate				1.00	0.65^**	0.27	0.51^*	0.69^**
Grain number per ear					1.00	-0.15	0.67^**	0.95^**
1000-kernel weight						1.00	0.18	0.05
Ear number (×10⁴ hm^-2)							1.00	0.85^**
Yield								1.00