Heterosis effects on photosynthesis of upland cotton (Gossypium hirsutum) hybrid cultivars

Autor: H. ZHOU, Y. ZHANG, W.Q. DONG, X.M. XU, C.M. TANG
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Photosynthetica, Vol 59, Iss 1, Pp 106-115 (2021)
Druh dokumentu: article
ISSN: 0300-3604
1573-9058
DOI: 10.32615/ps.2020.081
Popis: The relationship between the environment and heterosis effects on the photosynthesis of upland cotton (Gossypium hirsutum) is unknown. No significant differences for net photosynthetic rate (PN), stomatal conductance (gs), and transpiration rate (E) were found between two studied cotton varieties Siza 3 and Zhongmiansuo 48. The PN and gs of Siza 3 demonstrated heterosis compared with its parents. The higher the effective photosynthetic radiation and CO2 concentration were, the more obvious the over better-parent heterosis (OH) of the PN was. The photosynthesis parameters of Zhongmiansuo 48 in different environments did not display obvious OH, but the PN of Siza 3 was higher than that of Zhongmiansuo 48. The performance index of the absorption (PIabs) of Siza 3 was higher than that of Zhongmiansuo 48. The PIabs was significantly related to the OH of the PN. The OH of the PN of hybrid cotton can be predicted via the PIabs under high temperature and light.
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