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EFFECTS OF SEED GRADING ON GROWTH AND YIELD OF SUMMER MAIZE UNDER NO-TILLING PRECISION SOWING CONDITIONS

文献类型： 外文期刊

作者： Zhao, Xia 1 ; Mei, Peipei 4 ; Zhang, Fengqi 3 ; Wu, Fenglan 3 ; Xue, Huazheng 3 ; Zhang, Jiajia 5 ; Huang, Ruidong 4 ; Ta 1 ;

作者机构： 1.enan Acad Agr Sci, Cereal Inst, Zhengzhou 450002, Henan, Peoples R China

2.Henan Agr Univ, Coll Agron, Zhengzhou 450002, Henan, Peoples R China

3.Henan Acad Agr Sci, Cereal Inst, Henan Prov Key Lab Maize Biol, Zhengzhou 450002, Henan, Peoples R China

4.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Liaoning, Peoples R China

5.Henan Inst Sci & Technol, Coll Sci & Technol, Collaborat Innovat Ctr Henan Prov Modern Biol Bre, Xinxiang 453003, Henan, Peoples R

关键词： Summer maize;Seed grading;No-tilling precision sowing;Yield

期刊名称：BANGLADESH JOURNAL OF BOTANY （ 影响因子：0.308； 五年影响因子：0.348 ）

ISSN： 0253-5416

年卷期： 2016 年 45 卷 4 期

页码：

收录情况： SCI

摘要： Three summer cultivars of Zea mays L., namely Xianyu 335, Zhengdan 958 and Yudan 998 were tested in vitro and in vivo for their growth and yield under no-tillage and precision sowing. The seeds were selected according to their size and grouped as T1 (>8 mm in dia.), T2 (>7 mm but <8 mm in dia) and T3 (<7 mm dia). Results indicated that the emergence force and emergence percentage of different graded seeds had the same trends, T2 > T1 > T3, among three maize varieties. The bigger the seeds, the greater the plant dry weight; and the sprouting rate, germination rate, sprouting uniformity, plant height uniformity, and grain yield all showed the same trends in that seed grading was better than no grading, and mostly, T1(T2) > T3 > C (no grading seeds), regardless of maize variety. Therefore, this study indicated that the first and second graded seeds were preferable for no- tilling precision sowing in summer maize production. Good graded seeds will be helpful for grain yield increase and resource allocation optimization.

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