Response of grain-filling properties and quality of winter wheat to drip irrigation in Xinjiang, China

Ying yong sheng tai xue bao = The journal of applied ecology
Jun Jie LeiZhi Min Wang

Abstract

To provide theoretical basis for the water-saving, high-yield and good quality cultivation techniques of drip-irrigated winter wheat, the wheat cultivar 'Xindong 22' was adopted as the test material, and five irrigation amounts including 3150 (W1), 3900 (W2), 4650 (W3), 5400 (W4) and 0 (CK) m3·hm-2 were adopted to investigate effects of drip irrigation amount on grain filling dynamics and quality traits in 2012-2013 and 2013-2014 wheat growing seasons in Xinjiang. Results indicated that the grain-filling dynamics of drip-irrigated winter wheat in different treatments presented the "S" shape curve, and accorded with the Logistic model with high fitting degree. The fast increase period of wheat grain-filling was measured at 12-20 days after anthesis. The maximum filling rate (Vm) increased at first and decreased later with the increase of drip irrigation amount, and was obtained in the treatment W3 in the two seasons, which was 2.16 g·d -1and 2.59 g·d -1, respectively. With the increase in drip irrigation amount, the bulk mass, protein content, flour extraction rate, wet gluten content, dough stability time, degree of softening, dough extension resis-tance and draw ratio of the drip-irrigated wheat firstly increased and decreased...Continue Reading

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