海岛棉主要数量性状遗传相关及配合力研究-作物遗传育种专业论文.docxVIP

AbstractThe Abstract The Sea Isl锄d COtton w雏胁。嘴for gcIod fiber chamcte培ill pl锄ting ca仲∞all tlle world．Many experb had stIJdicd g％etics髂pects of幽e upl卸d c咖ll，bm me mpo啮we他1e豁for the sea Isl锄d cotlon砒pres锄t．This比search had syStcmatically拙c惜sed hybrid Fl锄d F2 hcrcd时mle of the S阻 Isl柚d Cotl0叽in x删i锄g region． 1．Lim pe代em，liminde】‘，bonweigllLfaJIen rale，fmit-b啪chn啪ber，fibcrg雠ngtlI’fiberelongation fatio锄d fiber Ieng吐rs hered时we佗mainIy con仃oled by add“ive ge∞；tlle p静疗ost l缸yield，yield，∞ed inde)【’boJl number 11ad high heredj％t∞．Simultaneo惦ly w笛infl咖∞d by d蚴i枷ce锄d enVi∞啪ent e仃en；plam heigbt，mic删1aire，fibcrⅧifom时had a h{曲domin觚t e虢“ Lint percenLfiber length c彻fonTled to tlle additive-domin卸t一印i瞄is model；boll weigllt conf．o册ed to the additive．epistasis model；fib盯sn锄gtll’micfonaife confomed to t11e additive model；boll n啪ber’ seed yield confo呻ed to addjtivc—domin柚t modcL 2．n”con它lation锄al”is indicated th越mo吼n面ts(FI，F2)had femarkabIe exIremely陀marlcable con℃lation w曲mid·p{m舶t训ue．Fl，F2 yield仃ai乜(sub-∞ed index)becomes p∞itiVe con℃lation．The path 锄alysis indicated tll雒lint pefc舶t锄d boll numbcr of direct influ锄∞w船bigge巩boU wight w笛10w％ 1he textjk tiber q岫J时(sub-fIbcf el∞gation耐o)became mⅢ|h nega主iVe co玳lalion w弛yield仃aits(蛐b- 辩ed index)；tlle矗ber谢协(sub-micronai哟bec枷e positjVe cor佗lalion；The fiber删ts with boll opening time，p∞-f如st yield rate we他mgative con芑lation；The main∞onolllical仃aits with pl孤t heigllttIle蜘 pe—meter锄d leafleng山we佗坤marlcably positive cOrrel砒ion． 3．Hetemsis pe雨m卸ce Fl seed yieId w舔bi鹳e就superiorily∞yield订ails，F2 had li仳le drop∞ yield traits，boll n岫bcr dmped sharply；Fl had a cenain superi耐ty ill tlle main锄出le fiber们j拓，F2 (sub-fiber elongation)had little drop t0 F1． Fl had cenain supcri耐ty in n删tiorrs t陀its，t11e fall朋rate w勰lower m柚tll缸ofmid-pa∞nts；The 矗rst如qit-branch w弱lower ofF2，the pcriOd ofdur砒ion化duced，tlIe p旭一疗Dst yield r咖eIlll锄ced；The weight ofmid-boll w船heavier，觚d t11e bonom柚d top boll di仃e咖ce w笛not obVio懈；The boll Weight of long-丘．un．branchtype cattonwas h