Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds
Pooled analysis of the test-crosses evaluation of 61 newly developed maize (Zea mays L.) inbred lines usingtwo inbred testers namely BML-6 and BML-7 during rabi 2016-17 and 2017-18 at ICAR-IIMR Regional Centre,Begusarai revealed significant variation among genotypes, general combining ability (GCA)...
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| Format: | Article |
| Language: | English |
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Indian Council of Agricultural Research
2021-12-01
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| Series: | The Indian Journal of Agricultural Sciences |
| Subjects: | |
| Online Access: | https://epubs.icar.org.in/index.php/IJAgS/article/view/118535 |
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| author | S B SINGH P KUMAR R K KASANA M CHOUDHARY S KUMAR R KUMAR C G KARJAGI B KUMAR S RAKSHIT |
| author_facet | S B SINGH P KUMAR R K KASANA M CHOUDHARY S KUMAR R KUMAR C G KARJAGI B KUMAR S RAKSHIT |
| author_sort | S B SINGH |
| collection | DOAJ |
| description |
Pooled analysis of the test-crosses evaluation of 61 newly developed maize (Zea mays L.) inbred lines usingtwo inbred testers namely BML-6 and BML-7 during rabi 2016-17 and 2017-18 at ICAR-IIMR Regional Centre,Begusarai revealed significant variation among genotypes, general combining ability (GCA) and specific combiningability (SCA) effects for all the traits. Out of 61 inbred lines, 29 exhibited significant positive GCA effect for grainyield with maximum GCA effect value of 25.64. Inbred lines, viz. IMLSB-1299-5, IMLSB-406-2, IMLSB-334B-2,IMLSB-814-2 and IMLSB-285-1 were identified as the best general combiners on the basis of GCA effects whichcan be utilized to a greater extent in hybrid breeding programme. Out of 29 inbred lines with significant positive GCAeffects, 12 and 17 lines also showed significant positive SCA effects with tester, BML-7 and BML-6 respectively, thuswere classified into two heterotic groups ‘A’ and ‘B’, respectively. Out of 122 test-crosses, 14 exhibited significantand positive heterosis for yield over three national checks. The information generated on the heterotic grouping willhelp in further streamlining the available germplasm into heterotic pools and thereby augmenting the national hybridbreeding programme.
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| first_indexed | 2024-04-10T16:36:46Z |
| format | Article |
| id | doaj.art-7140adc8685c45bb874b01a22d42c04d |
| institution | Directory Open Access Journal |
| issn | 0019-5022 2394-3319 |
| language | English |
| last_indexed | 2024-04-10T16:36:46Z |
| publishDate | 2021-12-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | The Indian Journal of Agricultural Sciences |
| spelling | doaj.art-7140adc8685c45bb874b01a22d42c04d2023-02-08T11:18:23ZengIndian Council of Agricultural ResearchThe Indian Journal of Agricultural Sciences0019-50222394-33192021-12-01911110.56093/ijas.v91i11.118535Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbredsS B SINGH0P KUMAR1R K KASANA2M CHOUDHARY3S KUMAR4R KUMAR5C G KARJAGI6B KUMAR7S RAKSHIT8Regional Maize Research and Seed Production Centre, Begusarai, Bihar 851 101, IndiaICAR-Indian Institute of Maize Research, PAU Campus, LudhianaRegional Maize Research and Seed Production Centre, Begusarai, Bihar 851 101, IndiaICAR-Indian Institute of Maize Research, PAU Campus, LudhianaRegional Maize Research and Seed Production Centre, Begusarai, Bihar 851 101, IndiaICAR-Indian Institute of Maize Research, PAU Campus, LudhianaUnit Office, ICAR-IIMR, Pusa Campus, New DelhiUnit Office, ICAR-IIMR, Pusa Campus, New DelhiICAR-Indian Institute of Maize Research, PAU Campus, Ludhiana Pooled analysis of the test-crosses evaluation of 61 newly developed maize (Zea mays L.) inbred lines usingtwo inbred testers namely BML-6 and BML-7 during rabi 2016-17 and 2017-18 at ICAR-IIMR Regional Centre,Begusarai revealed significant variation among genotypes, general combining ability (GCA) and specific combiningability (SCA) effects for all the traits. Out of 61 inbred lines, 29 exhibited significant positive GCA effect for grainyield with maximum GCA effect value of 25.64. Inbred lines, viz. IMLSB-1299-5, IMLSB-406-2, IMLSB-334B-2,IMLSB-814-2 and IMLSB-285-1 were identified as the best general combiners on the basis of GCA effects whichcan be utilized to a greater extent in hybrid breeding programme. Out of 29 inbred lines with significant positive GCAeffects, 12 and 17 lines also showed significant positive SCA effects with tester, BML-7 and BML-6 respectively, thuswere classified into two heterotic groups ‘A’ and ‘B’, respectively. Out of 122 test-crosses, 14 exhibited significantand positive heterosis for yield over three national checks. The information generated on the heterotic grouping willhelp in further streamlining the available germplasm into heterotic pools and thereby augmenting the national hybridbreeding programme. https://epubs.icar.org.in/index.php/IJAgS/article/view/118535Combining abilityHeterotic groupingLine × tester |
| spellingShingle | S B SINGH P KUMAR R K KASANA M CHOUDHARY S KUMAR R KUMAR C G KARJAGI B KUMAR S RAKSHIT Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds The Indian Journal of Agricultural Sciences Combining ability Heterotic grouping Line × tester |
| title | Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds |
| title_full | Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds |
| title_fullStr | Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds |
| title_full_unstemmed | Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds |
| title_short | Unveiling combining ability and heterotic grouping of newly developed winter maize (Zea mays) inbreds |
| title_sort | unveiling combining ability and heterotic grouping of newly developed winter maize zea mays inbreds |
| topic | Combining ability Heterotic grouping Line × tester |
| url | https://epubs.icar.org.in/index.php/IJAgS/article/view/118535 |
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