Effects of arbuscular mychorrhiza on growth and nutrition of maize plants under low temperature stress
2016
Ning Lui | Xiaoying Chen | Fengbin Song | Fulai Liu | Shengqun Liu | Xiancan Zhu
Low temperature is one of the major environmental factors influencing crop growth. The effect of arbuscular mycorrhizal (AM) fungus on the growth and nutrient concentration of maize (Zea mays L.) plants in pot culture under low temperature stress was investigated. Low temperature resulted in a decrease in the root colonization of AM, plant height and biomass, N, P, K, Ca, Mg, Zn, NO sub 3 sup - -N and NH sub 4 sup + -N concentration in the shoot, and N, P, K, Ca, Al, Zn and Cu concentration in the root were all lowered by low temperature stress. Under low temperature, however, mycorrhizal plants had higher concentrations of N, P, K, and Cu in the shoot, and of N, P, Ca, Zn in the root compared with the non-mychorrhizal plants. Moreover, low temperature increased the nitrate reductase (NR) activity, and mychorrizal plants had higher NR activity than non-mychorrhizal plants. In conclusion, the results suggest that AM inoculation improves the nutritional status of maize plants and enhances their performance under low temperature condition.
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