EFFECT OF ALTITUDES ON LEAF PHOTOSYNTHETIC CHARACTERISTICS AND FRUIT NUTRITION OF ‘HONGYANG’ KIWIFRUIT (ACTINIDIA CHINENSIS)

To research the influence of different altitude on photosyntshetic characteristics and fruit nutrition of ‘Hongyang’ kiwifruit, the light response curve of ‘Hongyang’ kiwifruit planted at Ziyuan (higher altitude) and Xingan (lower altitude) of Guangxi were measured, by using Li-6400 portable photosynthesis system, and the soluble solids, Vc, soucar, titrable acidity and pigments content in fruit were measured.
The results showed that ‘Hongyang’ kiwifruit of Xingan with higher light saturation point (LSP, 396.628 µmol m^-2 s^-1) and lower light compensation point (LCP, 38.589 µmol m^-2 s^-1), the maximum net photosynthetic rate (Pmax, 17.007 µmol m^-2 s^-1), water use efficiency (WUE) and light use efficiency (LUE) were all higher than ‘Hongyang’ kiwifruit of Ziyuan.
The fruit of Xingan get higher chlorophyll and carotenoid content but anthocyanin content was lower, its total sugar, sucrose was significently higher but Vc was a little lower than Ziyuan.
The lower altitude can make the photosynthetic ability stronger, and the quality of fruit better.

VIII International Symposium on Kiwifruit

H.J. Gong, J.W. Li, K.Y. Ye, Q.S. Jiang, P.P. Liu

altitude, kiwifruit, light response curve, chlorophyll, anthocyanin, fruit nutrition

https://doi.org/10.17660/ActaHortic.2015.1096.32