Parental selection of hybrid breeding based on maternal and paternal inheritance of traits in rapeseed (Brassica napus L.)
Parental selection is crucial for hybrid breeding, but the methods available for such a selection are not very effective. In this study, a 6×6 incomplete diallel cross was designed using 12 rapeseed germplasms, and a total of 36 hybrids together with their parental lines were planted in 4 environmen...
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| description | Parental selection is crucial for hybrid breeding, but the methods available for such a selection are not very effective. In this study, a 6×6 incomplete diallel cross was designed using 12 rapeseed germplasms, and a total of 36 hybrids together with their parental lines were planted in 4 environments. Four yield-related traits and seed oil content (OC) were evaluated. Genetic distance (GD) was estimated with 359 simple sequence repeats (SSRs) markers. Heterosis levels, general combining ability (GCA) and specific combining ability (SCA) were evaluated. GD was found to have a significant correlation with better-parent heterosis (BPH) of thousand seed weight (TSW), SCA of seeds per silique (SS), TSW, and seed yield per plant (SY), while SCA showed a statistically significant correlation with heterosis levels of all traits at 1% significance level. Statistically significant correlations were also observed between GCA of maternal or paternal parents and heterosis levels of different traits except for SS. Interestingly, maternal (TSW, SS, and OC) and paternal (siliques per plant (SP) and SY) inheritance of traits was detected using contribution ratio of maternal and paternal GCA variance as well as correlations between GCA and heterosis levels. Phenotype and heterosis levels of all the traits except TSW of hybrids were significantly correlated with the average performance of parents. The correlations between SS and SP, SP and OC, and SY and OC were statistically significant in hybrids but not in parents. Potential applications of parental selection in hybrid breeding were discussed. |
| doi_str_mv | 10.1371/journal.pone.0103165 |
| format | Article |
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In this study, a 6×6 incomplete diallel cross was designed using 12 rapeseed germplasms, and a total of 36 hybrids together with their parental lines were planted in 4 environments. Four yield-related traits and seed oil content (OC) were evaluated. Genetic distance (GD) was estimated with 359 simple sequence repeats (SSRs) markers. Heterosis levels, general combining ability (GCA) and specific combining ability (SCA) were evaluated. GD was found to have a significant correlation with better-parent heterosis (BPH) of thousand seed weight (TSW), SCA of seeds per silique (SS), TSW, and seed yield per plant (SY), while SCA showed a statistically significant correlation with heterosis levels of all traits at 1% significance level. Statistically significant correlations were also observed between GCA of maternal or paternal parents and heterosis levels of different traits except for SS. Interestingly, maternal (TSW, SS, and OC) and paternal (siliques per plant (SP) and SY) inheritance of traits was detected using contribution ratio of maternal and paternal GCA variance as well as correlations between GCA and heterosis levels. Phenotype and heterosis levels of all the traits except TSW of hybrids were significantly correlated with the average performance of parents. The correlations between SS and SP, SP and OC, and SY and OC were statistically significant in hybrids but not in parents. Potential applications of parental selection in hybrid breeding were discussed.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0103165</identifier><identifier>PMID: 25061995</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Agricultural production ; Biology and Life Sciences ; Brassica ; Brassica napus ; Brassica napus - genetics ; Brassica rapa - genetics ; Brassica rapa - growth & development ; Breeding ; Climate change ; Combining ability ; Correlation ; Crops ; Crosses, Genetic ; Experiments ; Genetic distance ; Genetic diversity ; Genetic Variation ; Genotype ; Genotype & phenotype ; Grain ; Heterosis ; Hybridization, Genetic ; Hybrids ; Laboratories ; Methods ; Microsatellite Repeats - genetics ; Parents ; Phenotypes ; Rape plants ; Rapeseed ; Seasons ; Seeds ; Seeds - genetics ; Seeds - growth & development ; Selection, Genetic ; Simple sequence repeats ; Statistical analysis ; Statistical significance</subject><ispartof>PloS one, 2014-07, Vol.9 (7), p.e103165-e103165</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Xing et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2014 Xing et al 2014 Xing et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c758t-cc1d78eeda4261c7eaf987acf192298627d3384de3a41f4a3f4a8fd6436b081c3</citedby><cites>FETCH-LOGICAL-c758t-cc1d78eeda4261c7eaf987acf192298627d3384de3a41f4a3f4a8fd6436b081c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4111582/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4111582/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,725,778,782,862,883,2098,2917,23853,27911,27912,53778,53780,79355,79356</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25061995$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Sun, Meng-xiang</contributor><creatorcontrib>Xing, Nailin</creatorcontrib><creatorcontrib>Fan, Chuchuan</creatorcontrib><creatorcontrib>Zhou, Yongming</creatorcontrib><title>Parental selection of hybrid breeding based on maternal and paternal inheritance of traits in rapeseed (Brassica napus L.)</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Parental selection is crucial for hybrid breeding, but the methods available for such a selection are not very effective. In this study, a 6×6 incomplete diallel cross was designed using 12 rapeseed germplasms, and a total of 36 hybrids together with their parental lines were planted in 4 environments. Four yield-related traits and seed oil content (OC) were evaluated. Genetic distance (GD) was estimated with 359 simple sequence repeats (SSRs) markers. Heterosis levels, general combining ability (GCA) and specific combining ability (SCA) were evaluated. GD was found to have a significant correlation with better-parent heterosis (BPH) of thousand seed weight (TSW), SCA of seeds per silique (SS), TSW, and seed yield per plant (SY), while SCA showed a statistically significant correlation with heterosis levels of all traits at 1% significance level. Statistically significant correlations were also observed between GCA of maternal or paternal parents and heterosis levels of different traits except for SS. Interestingly, maternal (TSW, SS, and OC) and paternal (siliques per plant (SP) and SY) inheritance of traits was detected using contribution ratio of maternal and paternal GCA variance as well as correlations between GCA and heterosis levels. Phenotype and heterosis levels of all the traits except TSW of hybrids were significantly correlated with the average performance of parents. The correlations between SS and SP, SP and OC, and SY and OC were statistically significant in hybrids but not in parents. Potential applications of parental selection in hybrid breeding were discussed.</description><subject>Agricultural production</subject><subject>Biology and Life Sciences</subject><subject>Brassica</subject><subject>Brassica napus</subject><subject>Brassica napus - genetics</subject><subject>Brassica rapa - genetics</subject><subject>Brassica rapa - growth & development</subject><subject>Breeding</subject><subject>Climate change</subject><subject>Combining ability</subject><subject>Correlation</subject><subject>Crops</subject><subject>Crosses, Genetic</subject><subject>Experiments</subject><subject>Genetic distance</subject><subject>Genetic diversity</subject><subject>Genetic Variation</subject><subject>Genotype</subject><subject>Genotype & phenotype</subject><subject>Grain</subject><subject>Heterosis</subject><subject>Hybridization, Genetic</subject><subject>Hybrids</subject><subject>Laboratories</subject><subject>Methods</subject><subject>Microsatellite Repeats - genetics</subject><subject>Parents</subject><subject>Phenotypes</subject><subject>Rape plants</subject><subject>Rapeseed</subject><subject>Seasons</subject><subject>Seeds</subject><subject>Seeds - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xing, Nailin</au><au>Fan, Chuchuan</au><au>Zhou, Yongming</au><au>Sun, Meng-xiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Parental selection of hybrid breeding based on maternal and paternal inheritance of traits in rapeseed (Brassica napus L.)</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2014-07-25</date><risdate>2014</risdate><volume>9</volume><issue>7</issue><spage>e103165</spage><epage>e103165</epage><pages>e103165-e103165</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Parental selection is crucial for hybrid breeding, but the methods available for such a selection are not very effective. In this study, a 6×6 incomplete diallel cross was designed using 12 rapeseed germplasms, and a total of 36 hybrids together with their parental lines were planted in 4 environments. Four yield-related traits and seed oil content (OC) were evaluated. Genetic distance (GD) was estimated with 359 simple sequence repeats (SSRs) markers. Heterosis levels, general combining ability (GCA) and specific combining ability (SCA) were evaluated. GD was found to have a significant correlation with better-parent heterosis (BPH) of thousand seed weight (TSW), SCA of seeds per silique (SS), TSW, and seed yield per plant (SY), while SCA showed a statistically significant correlation with heterosis levels of all traits at 1% significance level. Statistically significant correlations were also observed between GCA of maternal or paternal parents and heterosis levels of different traits except for SS. Interestingly, maternal (TSW, SS, and OC) and paternal (siliques per plant (SP) and SY) inheritance of traits was detected using contribution ratio of maternal and paternal GCA variance as well as correlations between GCA and heterosis levels. Phenotype and heterosis levels of all the traits except TSW of hybrids were significantly correlated with the average performance of parents. The correlations between SS and SP, SP and OC, and SY and OC were statistically significant in hybrids but not in parents. Potential applications of parental selection in hybrid breeding were discussed.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25061995</pmid><doi>10.1371/journal.pone.0103165</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Agricultural production Biology and Life Sciences Brassica Brassica napus Brassica napus - genetics Brassica rapa - genetics Brassica rapa - growth & development Breeding Climate change Combining ability Correlation Crops Crosses, Genetic Experiments Genetic distance Genetic diversity Genetic Variation Genotype Genotype & phenotype Grain Heterosis Hybridization, Genetic Hybrids Laboratories Methods Microsatellite Repeats - genetics Parents Phenotypes Rape plants Rapeseed Seasons Seeds Seeds - genetics Seeds - growth & development Selection, Genetic Simple sequence repeats Statistical analysis Statistical significance |
| title | Parental selection of hybrid breeding based on maternal and paternal inheritance of traits in rapeseed (Brassica napus L.) |
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