Application of gibberellic acid (GA3): It is an efficient and effective growth hormone, which stimulates the cell elongation and thus advances the panicle exsertionin female line. This hormone has the following favourable effects:-a) Increases the duration of floret opening, thus ensures pollination.b) Increases the stigma exsertion and its receptivity.c) Promotes plant height.d) Widens the flag leaf angle and thus facilitates easy entry of the pollen grains.e) Influences flowering and thus transplanting in parental lines can be adjusted.f) Promotes panicle exsertion and growth rate of secondary andtertiary tillers.
đang được dịch, vui lòng đợi..