| Bar-transgenic wheats, Nong8 - Bar gene transferred into B genome and Nong4- Bar gene transferred into D genome, with the herbicide- resistant function, they can be choosed as the parents to breed the varieties which can resist herbicide by the traditional way.In the process to insert Bar Gene, the effects on physiological and biochemical Characteristics occurred because of the location of Bar Gene, which was studied at present time. But the effects on photosynthetic characteristics and yield trends are still under research.In this paper, different effects on trends of yield were found at first. And the photosynthetic characteristics were determined accordingly, which on the other hand showed the different effects on the photosynthetic characteristics of Bar-transgenic wheats and their hybrids. The results were as follows:1. Between Bar-transgenic wheat Nong4 and its hybrids, F1Nong4×Wanmai48 had the better photosynthetic characteristics and trends of yield than F1Wanmai48×Nong4. And mid-parent heterosis rate of F1Nong4×Wanmai48 was higher than F1wanmai48×Nong4.2. Between Bar-transgenic wheat Nong8 and its hybrids, F1Nong4×Wanmai48 had the better photosynthetic characteristics and trends of yield than F1Wanmai48×Nong8. And mid-parent heterosis rate of F1Nong4×Wanmai48 was higher than F1Wanmai48×Nong8.3 Between Bar-transgenic wheats and their hybrids, Nong4-Bar gene into D genome had the better photosynthetic characteristics and trends of yield than Nong8 - Bar gene into B genome. The mid-parent heterosis rate of F1Nong4×Wanmai48 was the highest among hybrids. And mid-parent heterosis rate of F1Nong4×Wanmai48,F1Nong4×Wanmai48 were higher thanF1Wanmai48×Nong4,F1Wanmai48×Nong8.In a word, the different effects on photosynthetic characteristics occurred because of the different location of Bar gene. So, according to the revelation, when the anti-herbicide hybrids were breeded, Nong4-Bar gene into D genome was a better choice as father plant and high yield wheat was choosed as mother. |
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