dahliae D8092. These results show that the effect of the At subgenome on resistance to Verticillium wilt is greater than that of the Dt subgenome. This study was supported by the National Natural Science Foundation of China (30730067 and 31171590), the Philosophy Doctoral Fund Program of Xinjiang Bingtuan Group (2010JC01), and the Priority Academic Program Development of Jiangsu Higher Education Institutions. “
“Conservation agriculture

(CA) is recommended as a practice for sustainable crop production that simultaneously preserves soil and water resources [1] and [2]. Generally, CA relies on three major principles: maintenance of a permanent vegetative cover learn more or mulch on the soil surface, minimal soil disturbance (no/reduced tillage) and diversified crop rotation [3]. Given the positive effects of CA on soil and water conservation, environmental

health, and economic viability, it has been regarded as an environment-friendly technology and has been applied worldwide [4], [5] and [6]. However, given the increasingly serious situation of food security worldwide, concerns Ixazomib purchase are arising about the impacts of CA practices on crop yield, especially in the developing countries [4]. The effects of CA on crop yield can be variable [7]. For example, CA may increase crop yield through improving soil fertility by conserving soil and water and sequestering organic carbon in farmland soils [8], [9] and [10]. find more On the other hand, CA may also have detrimental impacts on crop yield by altering soil physiochemical and biological conditions, such as decreasing soil temperatures in areas of high latitude and seasons with low temperature, and aggravating weed and disease incidence [11], [12] and [13]. The realistic effects of CA on crop yield may depend largely on specific CA practices, regional climate characteristics, and cropping systems [2], [14] and [15]. As the largest developing

country, China shows great variation in regional climates and cropping systems. Since the 1970s, great efforts have been made in research on and demonstration of CA in the country. The total area of Chinese farmland under CA was more than 6.6 × 106 ha in 2012 [16], but the ratio of farmland area under CA to total cropland area in China is still lower than those in the U.S. and Canada. The key factor limiting the application of CA in China is the persistent uncertainty about the actual impacts of CA on crop yield [17] and [18]. For example, He et al. [19] reported that winter wheat and summer maize yields tended to be higher under no/reduced tillage (NT) than conventional tillage without crop straw retention (CT), especially in dry years. Chen et al. [20] found that NT significantly decreased maize yield, whereas Huang et al.