Response of intercropped maize "source-sink" characteristics to elevated CO concentration and phospho-rus application in maize intercropping with peanut system.

This study aimed to clarify the impacts of elevating CO concentration (e[CO]) on maize "source-sink" characteristics in maize intercropping with peanut system. We investigated the impacts of e[CO] on leaf "source" quantity, gas exchange parameters, population "source" productivity, "sink" capacity, grain to leaf ratio, yield and intercropping advantage of maize under 0 (P) and 180 kg PO·hm(P). The results showed that compared with ambient CO concentration (a[CO]), e[CO] augmented leaf "source" quantity and "source" activity of intercropping maize, and significantly increased productivity of population "source".

One-Off Irrigation Combined Subsoiling and Nitrogen Management Enhances Wheat Grain Yield by Optimizing Physiological Characteristics in Leaves in Dryland Regions.

Irrigation practice, tillage method, and nitrogen (N) management are the three most important agronomic measures for wheat ( L.) production, but the combined effects on grain yield and wheat physiological characteristics are still poorly understood. We conducted a three-year split-split field experiment at the junction of the Loess Plateau and Huang-Huai-Hai Plain in China.

Effect of soil and community factors on the yield and medicinal quality of growth at different altitudes of the Funiu mountain.

Altitude and ecological factors significantly influence plant growth and the accumulation of secondary metabolites. However, current research on the impact of altitude and ecological factors on the yield and medicinal quality of is limited. This study established sampling sites in wild populations of across seven altitude ranges on Funiu Mountain.

Coupled one-off alternate furrow irrigation with nitrogen topdressing at jointing optimizes soil nitrate-N distribution and wheat nitrogen productivity in dryland.

The judicious management of water and nitrogen (N) is pivotal for augmenting crop productivity and N use efficiency, while also mitigating environmental concerns. With the advent of the High-Farmland Construction Program in China, one-off irrigation has become feasible for most dryland fields, presenting a novel opportunity to explore the synergistic strategies of water and N management. This study delves into the impact of one-off alternate furrow irrigation (AFI) and topdressing N fertilizer (TN) on soil nitrate-N distribution, and N productivity-including plant N accumulation, translocation, and allocation, and grain yield, protein content, N use efficiency of winter wheat (Triticum aestivum L.

Identification and analysis of isoflavone reductase gene family in Gossypium hirsutum L.

Isoflavone reductase (IFR) is a key enzyme controlling isoflavone synthesis and widely involved in response to various stresses. In this study, the IFR genes in four Gossypium species and other 7 species were identified and analyzed in the whole genome, and the physicochemical properties, gene structures, cis-acting elements, chromosomal locations, collinearity relationships and expression patterns of IFR genes were systematically analyzed. 28, 28, 14 and 15 IFR genes were identified in Gossypium hirsutum, Gossypium barbadense, Gossypium arboreum and Gossypium raimondii, respectively, which were divided into five clades according to the evolutionary tree and gene structure.

Combined effects of biochar and chicken manure on maize ( L.) growth, lead uptake and soil enzyme activities under lead stress.

The goal of the present work was to evaluate the additive effects of biochar and chicken manure on maize growth in Pb-contaminated soils. In this study, we conducted a pot experiment to investigate how biochar in soil (20, 40 g·kg), chicken manure in soil (20, 40 g·kg), or a combination of biochar and chicken manure in soil (each at 20 g·kg) effect maize growth, Pb uptake, leaves' antioxidant enzymatic activities, and soil enzyme activities under artificial conditions to simulate moderate soil pollution (800 Pb mg·kg). The results showed that all biochar and/or chicken manure treatments significantly ( < 0.

Rotary tillage in rotation with plowing tillage improves soil properties and crop yield in a wheat-maize cropping system.

Soil rotational tillage is an effective measure to overcome the problems caused by long-term of a single tillage, but the effect of the interval time of rotational tillage practices is not very well understood. Therefore, we conducted a 3-year field study in a wheat-maize cropping system to evaluate the effects of rotary tillage (RT) in rotation with plowing tillage (PT) on soil properties in northern China. Four practices were designed as follows: 3 years of RT to a depth of 10-15 cm (3RT), 3 years of PT to a depth of 30-35 cm (3PT), 1 year of PT followed by 2 years of RT (PT+2RT), and 2 years of PT followed by 1 year of RT (2PT+RT).

[Effects of maize-peanut intercropping on economic yield and light response of photosynthesis].

A field experiment was conducted to study the effects of maize-peanut intercropping on the economic yield of the two crops and the light response of their functional leaves' photosynthesis. The results showed that maize-peanut intercropping had an obvious yield advantage, with the total economic yield being 2,896 kg hm(-2) in 2004 and 2,894 kg hm(-2) in 2005, and enhanced the land utilization rate by 14%-17%. For maize's functional leaves, the intercropping enhanced their light saturation point, compensation point, and photosynthetic rate under strong light; while for peanut's functional leaves, it reduced their light saturation point and compensation point but enhanced the apparent quantum yield of photosynthesis and photosynthetic rate under weak light, indicating that maize-peanut intercropping enhanced the utilization efficiency of strong light by maize and that of weak light by peanut, making this intercropping system present an obvious yield advantage.