关键词: 免耕山地油菜, 免耕山地油菜, 化学除草, 灰色关联和模糊聚类分析, 丰产性和稳定性

Abstract: To provide a basis for the breeding of hybrid Camellia oleifera, we selected suitable one from four light response models by fitting and comparing the light response curve of 3 hybrid F1 generation of Camellia oleifera. It showed that there was a similar change of Pn in the 3 hybrid F1 generation by using the light response curve fitting, but the maximum value was different, the order was‘Ganwu 16’(♂)בShuntaifenhong’ (♀) hybrid[7.61 μmol/(m2·s)]>‘Gan190’(♂)בGanwu 8’(♀) hybrid[8.74 μmol/(m2·s)]>‘Ganwu 1’(♂)× ‘Baipizhongzi’(♀) hybrid[2.62 μmol/(m2·s)]. The light suppression point of the hybrid progeny of‘Ganwu 16’ (♂)ב Shuntaifenhong’(♀) [1750 μmol/(m2·s)] and‘Gan190’(♂)בGanwu 8’(♀) hybrid [1600 μmol/(m2·s)] were higher than that of‘Ganwu 1’(♂)בBaipizhongzi’(♀) hybrid [1000 μmol/(m2·s)]. Under the weak light condition [<200 μmol/(m2 ·s)], the curves of the four light response models were almost straight. The fitting values of the 3 hybrids light saturation points and the compensation points were close to the measured values by using the right angle hyperbolic correction model. The path analysis showed that the main factors affecting the 3 hybrids Pn were different. The main affecting factors of Pn of‘Ganwu 16’(♂)בShuntaifenhong’(♀) hybrid and‘Gan190’(♂)בGanwu 8’(♀) hybrid were Ci and Tr, and the direct effect of Ci on Pn was - 0.980, -0.840, the effect of Tr on Pn was achieved by the direct effect of Tr on Pn (0.749, 0.189) and the indirect effect of Tr on Pn through Gs (0.241, 0.183). The main affecting factors on Pn of‘Ganwu 16’(♂)× ‘Shuntaifenhong’(♀) hybrid were Ci and Gs, the path coefficient of the direct effect of Ci on Pn was -0.667, the effect of Gs on Pn was achieved by the direct effect of Gs on Pn (0.510) and the indirect effect of Gs on Pn through Tr (0.503).