An economic and viable approach to improve wheat quality in Qinghai–Tibetan Plateau,China

Wheat flour products are the main dietary component of the Qinghai-Tibetan Plateau(QTP)population in China.However,the high altitude restricts the local wheat quality and quantity,and the applied nitrogen rate is higher than the optimal rate for wheat planting.In this study,we considered whether reducing the amount of nitrogen fertilizer and introducing the superior varieties from the North China Plain(NCP)are viable ways to increase the wheat quality and quantity in the QTP.Three and four winter wheat cultivars from QTP and NCP,respectively,were planted in Lhasa at an altitude of 3647 m with reduced topdressing nitrogen application at the jointing stage.The wheat from NCP exhibited higher grain hardness index and test weight,and better flour and dough quality.Reducing the topdressing nitrogen fertilizer from 135 to 75 kg N ha^(-1) at the jointing stage(with the same basal fertilization of 105 kg N ha^(-1) did not significantly(P<0.05)affect the grain yield,grain quality,flour quality or dough quality in any of the cultivars.In summary,introducing high-quality winter wheat varieties from the NCP to the Lhasa plateau is a viable way to enhance the wheat supply and quality in the QTP.Reducing a certain amount of the nitrogen fertilizer is an economic and feasible approach for the QTP region.

Molecular Detection of Main Diseases of Introduced Sugarcane in Guangxi

According to the quarantine procedures for sugarcane introduction, thirty-three sugarcane varieties/materials from the United States, Bangladesh, Thailand and some other countries were quarantined. The result showed that main diseases and pests that are concerned in quarantine were undiscovered. In addition, molecular detection results of Fiji disease and leaf scald disease were negative ; detection results of mosaic in six varleties/materials were positive; detection results of yellow leaf syndrome in eight varieties/materials were positive.