Abstract
AbstractA pot and 2 successive seasons field experiments were conducted on bean, by spraying 25,50 or 100 ppm GA, 100, 250 or 500 ppm of either CCC or B‐9, one month after sowing. Results showed that:GA induced stem elongation and thinning through cell elongation and decrease of both of ground tissue cell‐size and vascular cylinder cell layers in the stem. On the other hand, CCC and B‐9 led to stem shortening and thickening, as a consequence of increased number of cell layers leading to widening the vascular cylinder of the stem.Leaf area was much more increased by CCC and B‐9 than by GA.GA increased amylase activity and had no effect on invertase, meanwhile CCC and B‐9 mostly decreased the former's and increased the latter's enzyme activity, 30 days after spraying.GA and CCC increased number of seeds/pod, while B‐9 had no effect on this character.CCC and B‐9 increased pod number/plant, specific seed weight, leading to increment of seed yield/plant, while GA had no effect on these characters.
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