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upland cotton (短纖維)陸地棉。

upland plover

Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing . it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief , attaining to 51 . 2 % and 65 . 4 % respectively for boll weight and lint percentage . the dominant effect was also in higher rate , 32 . 6 % and 16 . 8 % respectively . the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13 . 3 % and 3 . 5 % respectively in extreme significance . however , boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2 . 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2 . 1 % ) . the gene actions were in conformity with the heterosis expression . it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components , which indicated that among those parents with less difference and close relationships , there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding . correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements 利用5個具有不同纖維品質性狀的品種(系)配制完全雙列雜交組合20個,通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小,不存在母體效應,并以加性遺傳效應為主,分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所占的比率也較高,分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大,分別為13 . 3 %和3 . 5 % ,達到了極顯著;鈴重的超親優勢為2 . 0 % ,不顯著;衣分為顯著的負值( - 2 . 1 % ) .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上,親本相當配制的組合雜合顯性較高,其超親優勢正向顯著,而極值親本(差異較大)所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關,遺傳改良的難度較大

The deduced amino acid sequence of p1a5 was most homologous to the lipid transfer protein 3 precursor isolated from upland cotton , the lipid transfer protein sdi - 9 isolated from common sunflower , and the nonspecific lipid - transfer protein precursor allergen pru av3 isolated from sweet cherry 對得到的該片段分析表明,它是一種脂肪轉移蛋白( ltp )基因的部分序列。采用5 ’端race技術獲得了該基因的全長cdna序列n 。

Comparison of agronomic characters and path analysis of lint yield between insect - resistant cotton varieties and commercial varieties in upland cotton 基因棉與常規棉品種農藝性狀的比較及產量通徑分析

Inheritance of super quality fiber properties in upland cotton introgressed from gossypium anomalum wawra amp; peyritsch 異常棉漸滲的陸地棉高品質種質系纖維特性遺傳

Abscission and its mechanism of three different salt - tolerant types of upland cotton under the stress of salinity 鹽脅迫下不同耐鹽性的陸地棉品種脫落規律及機理

Analysis on genetic contribution of yield components to lint yield in upland cotton gossypium hirsutum l 陸地棉產量組分對皮棉產量的遺傳貢獻分析