{"id":2346,"date":"2020-03-06T02:40:52","date_gmt":"2020-03-06T02:40:52","guid":{"rendered":"http:\/\/agri-research-journal.net\/SjarEn\/?p=2346"},"modified":"2020-03-06T02:58:34","modified_gmt":"2020-03-06T02:58:34","slug":"genetic-analysis-of-some-productivity-traits-and-earliness-in-upland-cotton-gossypium-hirsutum-l","status":"publish","type":"post","link":"https:\/\/agri-research-journal.net\/SjarEn\/?p=2346","title":{"rendered":"Genetic Analysis of Some Productivity Traits and Earliness in Upland Cotton (Gossypium hirsutum L.)"},"content":{"rendered":"\n

Rawaa El-Shiekh Attiea*(1)<\/sup><\/strong><\/p>\n\n\n\n

(1). General\nCommission for Scientific Agricultural Research (GCSAR), Damascus, Syria.<\/p>\n\n\n\n

(*Corresponding\nauthor: Dr. Rawaa El-Shiekh Attiea. E-Mail: dr.\nrawaa3@gmail.com<\/a>).<\/p>\n\n\n\n

Received: 12\/11\/2019                                Accepted: 31\/12\/2019<\/p>\n\n\n\n

Abstract<\/strong><\/p>\n\n\n\n

Genetic potential, combining\nability, heterosis effects and heritability were studied in F1 genotypes of Gossypium\nhirsutum<\/em> L., at Cotton Research Station in Deir Ezzor, Syria. Four parental\ngenotypes (Aleppo 33\/1 (P1<\/sub>), Deir Ezzor 22 (P2<\/sub>), Line 106\n(P3<\/sub>) and Line G73 (P4<\/sub>)) and their six F1 half diallel\nprogenies were grown in a randomized complete block design with three\nreplications in 2011 season to study seed cotton yield (S.C.Y.kg\/don.); lint\npercentage (L.P.%) and earliness percentage (E.P.%). Results showed significant\n(p\u22640.01) differences among the genotypes, parents and crosses for seed cotton\nyield and lint percentage. Significant (p\u22640.05) differences were observed for\nparent vs. crosses indication to average heterosis over all hybrids for the\nabove two traits. For earliness, insignificant differences were showed among\ngenotypes, crosses and parent vs. crosses, but significant (p\u22640.05) differences\nwere showed among parents. Results indicated that best genotypes which\nperformed highest mean and general combining ability were: lines 106 and G73\nfor seed cotton yield; Deir Ezzor 22 for lint percentage and Aleppo 33-1 for\nearliness percentage. Thus, it could be suggested that these parental varieties\ncould be utilized in a breeding program for improving these traits to pass\nfavorable genes for improving hybrid and subsequently producing improved\ngenotypes through the selection in segregating generations. Best crosses based\non mean performance and\/or heterosis and\/or specific combining ability were\nAleppo 33-1*G73 followed by Aleppo 33-1*line 106 for seed cotton yield; Aleppo\n33-1*G73 for lint percentage and Line 106*G73 for earliness percentage.\nSuggesting that these crosses could be used in breeding program to improve such\ntraits. On the other hand, results showed high value of H2<\/sup>b<\/sub>\n% and low value of H2<\/sup>n<\/sub>%for seed cotton yield,  ascertained that dominance effects had great\nrole in the existence of the variability of this trait, which insure that the\nexpected gain from recurrent back crossing for seed cotton yield would be high\nin the breeding program. However, estimates of H2<\/sup>b<\/sub> % and\nH2<\/sup>n<\/sub>% for both of lint percentage and earliness percentage\nwere high. Theses convergence of narrow and broad heritability values revealed\nthat both additive and non-additive gene actions played important roles in the\ninheritance of these two above traits, so breeding program should contain\nselection and hybridization for improving these traits.<\/p>\n\n\n\n

Kay words:<\/strong> Cotton, Combining ability, Heterosis, Heritability.<\/p>\n\n\n\n

Full Paper in English: PDF<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Rawaa El-Shiekh Attiea*(1) (1). General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria. (*Corresponding author: Dr. Rawaa El-Shiekh Attiea. E-Mail: dr. rawaa3@gmail.com). Received: 12\/11\/2019                                Accepted: 31\/12\/2019 Abstract Genetic potential, combining ability, heterosis effects and heritability were studied in … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,998],"tags":[717,149,178],"class_list":["post-2346","post","type-post","status-publish","format-standard","hentry","category-crops","category-v7n1-february-2020","tag-combining-ability","tag-cotton","tag-heterosis"],"_links":{"self":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/2346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2346"}],"version-history":[{"count":2,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/2346\/revisions"}],"predecessor-version":[{"id":2356,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/2346\/revisions\/2356"}],"wp:attachment":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}