Change of endogenous hormone levels in main crop of San Pedro type fig after GA_3 treatment

ZHANG Xu;CHAI Li-juan;LI Yan-mei;CHEN Shang-wu;MA Hui-qin;College of Agronomy and Biotechnology,China Agricultural University;College of Food Science and Nutrition Engineering,China Agricultural University;

san pedro type fig;;main crop;;GA3 treatment;;endogenous hormones

San Pedro type figs preferred line M105 was used as experimental material.Different concentrations of gibberellic acid(GA3)were sprayed on the autumn fruit without pollination conditions.The purpose was to understand the effect of GA3 on the endogenous hormone of the fruit during parthenocarpy GA pesponse window period.The results showed that the contents of GAs all increased in each part of fruit with 100,250 and 500μg/mL GA3 treatments.The contents of IAA in all parts increased after one-day treatment.And at the ninth day,IAA contents in most parts were higher than that of CK.The contents of ZR were correlated with the treatment concentration.The contents of ZR in the female flower were higher than that of other three parts.The contents of ZR all increased in stem,fruit stalk and pulp with 100ug/mL treatment.Meanwhile,the change trend was relatively stable.And it is worth noting that the female flowers had a larger rise after three-days treatment.The contents of ABA in treated fruits were significantly decreased.And the contents were the highest with 500μg/mL treatment.The fruit rates of the treatments of 100,250 and 500ppmug/mL GA3,increased by 30.89%,46.67% and 45.78%respectively.