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豫北盐碱地引种红麻杂交种试验初报

张新1,董娜1,刘明久1,潘兹亮2**   

  1. 1河南科技学院生命科技学院, 河南新乡 453003; 2河南省信阳市农业科学院, 河南信阳 464000)
  • 出版日期:2014-01-10 发布日期:2014-01-10

The introduction of kenaf (Hibiscus cannabinus L.) hybrids on saline-alkali land in North Henan.

ZHANG Xin1, DONG Na1, LIU Ming-jiu1, PAN Zi-liang2**   

  1. (1College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, Henan, China; 2Xinyang Agricultural Sciences Academy of Henan Province, Xinyang, Henan 464000, China)
  • Online:2014-01-10 Published:2014-01-10

摘要: 为了筛选适合豫北盐碱地种植的高产红麻杂交组合,本研究以H318为对照,比较了栽培在盐碱土壤上的6对红麻杂交组合F1代和F2代的11个性状,分析了各个材料各个性状的竞争优势,F1代和F2代性状的平均竞争优势、显著性、相关性以及F2代性状相对于F1代的衰退率。结果表明:因组合不同,F1代与F2代各个性状的竞争优势差异较大,F2代显著衰退,但少数组合F2代仍具有一定利用价值;F1代与F2代间皮厚、鲜皮晒干率和鲜茎出麻率3个性状上存在极显著正相关;若以收获红麻全杆为目的,则F1代以组合F3A/992、F2代以组合F3A/R7为最佳;若以收获红麻纤维为目的,则F1代以组合P3A/R1、F2代以组合P3A/992为最佳。

关键词: 土壤微生物, 反硝化作用, 稳定同位素, 硝化作用, 位嗜(SP)

Abstract: In order to screen out the high-yielding kenaf hybrids which are suitable for growing on saline-alkali land in North Henan, taking H318 as a control, we compared 11 traits of six pairs hybrids F1 and F2 of kenaf and analyzed the competitive advantages of each trait, the difference and correlations between F1 and F2 generations, as well as the fading rates of the generation F2 relative to F1. The results showed that significant differences existed in the competitive advantage of each trait among combinations of F1 and/or F2 generations. The heterosis of F2 generations declined significantly, but the heterosis in a few combinations could be exploited. Moreover, there were highly significant positive correlations in fiber thickness, dried rate of fresh fiber and fiber rate of fresh stem between F1 and F2 generations. For harvesting the whole stem of kenaf, the F1 of combination F3A/992 and the F2 of combination F3A/R7 were the best, but for harvesting the fiber of kenaf, the F1 of combination P3A/R1 and the F2 of combination P3A/992 were the best.

Key words: nitrification, site preference (SP)., stable isotope, soil microbe, denitrification