Water‐saving cultivation plus super rice hybrid genotype improves water productivity and yield
| Autor: | Song Weizhou, Xiaolong Yang, Ping Li, Zongkui Chen, Cao Cougui, Aziz Khan, Ullah Najeeb |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Irrigation Stomatal conductance Oryza sativa food and beverages 04 agricultural and veterinary sciences Biology 01 natural sciences Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Cultivar Irrigation management Agronomy and Crop Science Surface irrigation Water content 010606 plant biology & botany Panicle |
| Zdroj: | Agronomy Journal. 112:1764-1777 |
| ISSN: | 1435-0645 0002-1962 |
| Popis: | Labor shortage, low water availability, and poor land use practice cause serious threats to rice (Oryza sativa L.) production around the world. Semiarid cultivation is a classical strategy for achieving high water productivity (WP) with lower labor inputs. However, it remains largely unknown whether the application of “super” or drought-resistant hybrid rice could achieve higher economic benefits (WP and yield) under semiarid cultivation. This study attempted to combine three irrigation management systems (semiarid rice cultivation, traditional flood irrigation, and dryland cultivation) with two cultivars (Yangliangyou 6, YLY6, a super hybrid rice genotype; Hanyou 113, HY113, a drought-resistant rice genotype), and evaluate their effects on the water-saving ability and yield (the economic benefits). The two genotypes showed no significant differences in grain yield under the semiarid and flood irrigation, and both had a greater WP (13.8–51.8%) under semiarid cultivation than under flood irrigation. YLY6 produced more panicles (P |
| Databáze: | OpenAIRE |
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