分区有助于在Zea mays的谷物填充过程中提高使用效率
Yan Sun1, Yang Han1, Zikai Xu1
1College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management (SKL-NUM), China Agricultural University, Beijing, China.
Frontiers in plant science
|July 20, 2023
概括
玉米杂交系CIMBL89表现出优异的 (P) 获取和重新调动,以提高谷物产量,特别是在低P条件下. 这种P利用的效率使其与其他线路区别开来,突出了其提高作物生产率的潜力.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 土壤科学 土壤科学
背景情况:
- 低的可用性限制了农业生态系统中的作物生产率.
- 从来源到下沉器官的重调动对于作物P利用效率至关重要.
- 了解流向发育的谷物 (水槽) 是确定作物产量的关键.
研究的目的:
- 调查不同玉米器官在丝后期对谷物 (P) 的具体贡献.
- 为了比较在不同供应条件下与对比的P状态的玉米杂交系之间的P吸收和重新调动策略.
主要方法:
- 三种玉米杂交品种 (CIMBL89,Ji846,CML118) 在高P (HP) 和低P (LP) 现场条件下种植.
- 谷物的谷物产量和P分配 (吸收与重新调动) 在丝后被量化.
主要成果:
- 与Ji846和CML118.8.相比,CIMBL89在HP和LP条件下表现出显著更高的谷物产量.
- 在LP下,CIMBL89主要依赖于谷物P的P吸收,而在HP下,它使用了重新调动的P.
- CML118显示了与之相反的P策略,更多地依赖LP下的重新调动和HP下的吸收.
结论:
- CIMBL89表现出卓越的P获取效率,这对于在低P条件下的谷物生产至关重要.
- CIMBL89有效地重新调动P,并避免在充足P的土壤中过度吸收,使其与其他测试的线路有所区别.
相关概念视频
01:21The Phosphorus Cycle
37.6K
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
37.6K
02:35Key Elements for Plant Nutrition
18.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.8K