| This paper studied on the advantages of cotton hybrid F2 and its utilization value. The results showed that the cotton hybrid F2 has some yield competition advantage. In field sites, successive sampling analysis of cotton fibre quality, shows that the fibre quality of F2 has no obvious difference comparing with that of F1. Although resistance separation exists in transgenic pests resistance hybrid F2, Pests damage might be avoided through suitable comprehensive protection measures. Comparing with F1, F2 has advantages degradation phenomena, but which is, however, mush less than estimated theoretical figure 50%. What's more, Fl has obvious advantages in terms of yield, development and growth, physiology & biochemistry, Pests-resistance and etc comparing with those of F2. There was a certain utilization value in cotton hybrid F2. |
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