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- W2391280057 abstract "In order to clarify the effects of planting density on population growth and grain yield of hybrid wheat C6-38/ Py85-1,a field experiment was conducted during whole wheat growth period.The results showed that the total number of population stems(PS),leaf area index(LAI),population dry weight(PDW) and photosynthetic potential(PP) of hybrid were the lowest under low density treatment(150 plants·m-2).PS were higher under high density treatment(450 plants·m-2) than that under medium density treatment(300 plants·m-2).LAI and PP were higher under high density treatment than under medium density treatment before flag leaf expansion,but lower after this stage.PDW was higher under high density treatment than that under medium density treatment before anthesis,but there was no significant difference after this stage.The crop growth rate(CGR) of hybrid was lower under low density treatment than that under medium and high density treatments before jointing,but after this stage there was no significant difference between low density treatment and medium density treatment,and higher than that under high density treatment.Under medium and high density treatments,PS had no mid-parent heterosis(Hm),while under low treatment,it had the positive mid-parent at the growth stages.The Hm of LAI and PDW increased significantly with the increase of planting density,except that the Hm of PDW had no significant difference between medium density treatment and high density treatment at anthesis stage.The grain yield of hybrid was the highest under medium density treatment and the lowest under high density treatment,and there was no significant difference between low density treatment and medium density treatment.The Hm of grain yield increased significantly with the increase of planting density.In production of hybrid wheat,the relative low planting density should be applied to increase the heterosis of population growth and yield." @default.
- W2391280057 created "2016-06-24" @default.
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- W2391280057 date "2008-01-01" @default.
- W2391280057 modified "2023-09-23" @default.
- W2391280057 title "Effects of Planting Density on Population Growth and Grain Yield of Hybrid Wheat C6-38/Py85-1" @default.
- W2391280057 hasPublicationYear "2008" @default.
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