| Characteristics of dry matter accumulation and grain yield forming of different spring wheat varieties or strains in dryland of Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2018.05.01 |
| Key Words: spring wheat variety dry matter accumulation dry matter translocation grain yield |
| Author Name | Affiliation | | GAO Yu-hong | Gansu Provincial Key Laboratory of Aridland Crop Science,Gansu Agricultural University,Lanzhou, Gansu 730070,China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WU Bing | Gansu Provincial Key Laboratory of Aridland Crop Science,Gansu Agricultural University,Lanzhou, Gansu 730070,China | | CUI Hong-yan | Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China | | LIU Hong-sheng | Agricultureand Animal Husbandry of Huining,Huining, Gansu 730799, China | | CHANG Yu | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | TIAN Xue-mei | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | NIU Jun-yi | Gansu Provincial Key Laboratory of Aridland Crop Science,Gansu Agricultural University,Lanzhou, Gansu 730070,China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| In order to explore the characteristics of dry matter accumulation and distribution, and grain yield forming of different spring wheat varieties or strains in dryland of Gansu Province, the field experiment was conducted to understand the dry matter accumulation and distribution, and grain yield formation rule of different spring wheat varieties. The 7 varieties or strains were selected from Spring Wheat Regional Trials of Gansu Province in 2016. The results showed that the leaf area index (LAI) of different spring wheat varieties or strains reached its peak at heading stage. The dry matter accumulation and allocationin grain of 06044-3-7-12 were the highest at maturity stage, which were significantly higher by 10.08% and 12.84% than which of Xihan No.2.Dry matter translocation was grain>stem+sheath+leaf>spike axis+grain husk. The dry matter accumulation after anthesis of Ganchun No.25,06044-3-7-12 and 06004-5-3 was increased by 33.39%, 24.46% and 14.37% than which of control, respectively. The contribution rate of dry matter as similation after anthesis to grain was accounted for 72.84%-83.60%. Ganchun No.25 was the highest among all varieties or strains, which was remarkably higher by 4.43% than which of Xihan No.2. The 1000-grains weight and grain yield of Ganchun No. 25 were the highest, followed by 06044-3-7-12, which of them were obviously higher by 6.15% and 3.17% than Xihan No.2, respectively. The results indicaded that the dry matter distribution in grain was the highest in this experimental condition.The dry matter accumulation and contribution rate to grain after anthesis were higher than which of before anthesis.The dry matter accumulation after anthesis of Ganchun No.25 was significantly higher than which of other varieties or strains. And the contribution rate of which to grain was higher by 2.89%~29.38% than which of others.The 1000-grains weight and grain yield of Ganchun No.25 were significantly higher than which of others. |
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