Gene Action and Heterosis Study in Hybrids Derived from New Inbred Lines in Maize (Zea mays L.)

Autor: Prakash Natikar, Udaykumar Kage, Deepa Madalageri, M.C. Wali, Prakash Gangashetty
Rok vydání: 2013
Předmět:
Zdroj: Molecular Plant Breeding.
ISSN: 1923-8266
DOI: 10.5376/mpb.2013.04.0018
Popis: The present study was conducted to estimate the heterosis for yield and yield related traits in 30 hybrids developed from ten lines crossed with three testers and explore them in commercial breeding. Thirty F 1 s generated were evaluated and the results shown that the ratio of sca / gca variance revealed that there was preponderance of non additive gene action in the expression of all the traits under study except for days to 50% tasseling and ear girth. Among thirty, three hybrids L2 Normal 0 7.8 pt 0 2 false false false EN-US ZH-CN X-NONE × /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} T1, L1 Normal 0 7.8 pt 0 2 false false false EN-US ZH-CN X-NONE × /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} T2 and L8 Normal 0 7.8 pt 0 2 false false false EN-US ZH-CN X-NONE × /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} T3 showed significant positive standard heterosis over both EH434042 and 900M (Commercial checks). These hybrids can be further tested in large scale and can be released commercially or used as development crosses in developing the inbred lines.
Databáze: OpenAIRE