Articles
CHANGES IN ENDOGENOUS HORMONES AND POLYAMINE DURING FLOWERING OF LONGAN
Article number
558_39
Pages
251 – 256
Language
English
Abstract
Changes in endogenous hormones and polyamines during flowering were studied in longan.
Content of IAA (indole-3-acetic acid) were high during staminate differentiation and low during pistillate differentiation.
The differentiation of flowers was accompanied by an increase in GA1+3 (gibberellic acid). ABA (abscisic acid) was low before sexual differentiation, but increased at anthesis.
The ratio of (IAA+ZR+GA1+3): ABA increased during female flowering (ZR, zeatin), and then decreased at anthesis.
A lower ratio appeared to benefit female flowering.
Endogenous polyamine (PA) was always high, and the proportion of Put also always high.
The ratio of (Spd + Spm): Put rose during staminate flower development, while decreased initially in pistillate flower, and then rose.
High concentration of Put was associated with pistillate differentiation.
Content of IAA (indole-3-acetic acid) were high during staminate differentiation and low during pistillate differentiation.
The differentiation of flowers was accompanied by an increase in GA1+3 (gibberellic acid). ABA (abscisic acid) was low before sexual differentiation, but increased at anthesis.
The ratio of (IAA+ZR+GA1+3): ABA increased during female flowering (ZR, zeatin), and then decreased at anthesis.
A lower ratio appeared to benefit female flowering.
Endogenous polyamine (PA) was always high, and the proportion of Put also always high.
The ratio of (Spd + Spm): Put rose during staminate flower development, while decreased initially in pistillate flower, and then rose.
High concentration of Put was associated with pistillate differentiation.
Publication
Authors
S.Q. Lin, Z.B. Zheng, H.J. Luo, G. Song, X. Guan
Keywords
endogenous hormones, flowers, longan, polyamines
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