Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes
Genetic improvement in a crop, viz. Brassica species, through plant breeding essentially requires the presence of adequate genetic diversity within the gene pool. Winter rapeseed is known to be genetically different from spring rapeseed and can therefore be used for extending genetic diversity in th...
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| Format: | Article |
| Language: | English |
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University of Belgrade - Faculty of Agriculture, Belgrade
2023-01-01
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| Series: | Journal of Agricultural Sciences (Belgrade) |
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| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1450-8109/2023/1450-81092303253R.pdf |
| _version_ | 1797396375281860608 |
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| author | Rameeh Valiollah |
| author_facet | Rameeh Valiollah |
| author_sort | Rameeh Valiollah |
| collection | DOAJ |
| description | Genetic improvement in a crop, viz. Brassica species, through plant breeding essentially requires the presence of adequate genetic diversity within the gene pool. Winter rapeseed is known to be genetically different from spring rapeseed and can therefore be used for extending genetic diversity in the progenies produced via crossing methods. Using line×tester analyses of two spring types of testers and six lines of winter-type rapeseed varieties, heterotic patterns of phenological traits, plant height and seed yield were estimated. Significant mean squares between parents and crosses revealed significant heterosis for all the traits. Line×tester mean squares, indicating the non-additive genetic effects, were significant only for plant height and seed yield. High narrow-sense heritability estimates for phenological traits underline the importance of additive genetic effects and thus the efficiency of selection for improving these traits. Based on the significant and positive expression of heterosis effects for phenological traits and plant height in the winter parents, it was concluded that the F1 progenies had earlier and shorter maturity than the winter parents. F1 progenies were also early flowering, early maturing and taller than the spring-type parents. Significant positive heterosis of the crosses for seed yield was observed in 75% and 42% of F1 progenies compared to the spring and winter parents, respectively, indicating a higher yield potential of the F1 hybrids than the spring and winter parents. |
| first_indexed | 2024-03-09T00:49:22Z |
| format | Article |
| id | doaj.art-38e454c9024146759dbb67090e7b1562 |
| institution | Directory Open Access Journal |
| issn | 1450-8109 2406-0968 |
| language | English |
| last_indexed | 2024-03-09T00:49:22Z |
| publishDate | 2023-01-01 |
| publisher | University of Belgrade - Faculty of Agriculture, Belgrade |
| record_format | Article |
| series | Journal of Agricultural Sciences (Belgrade) |
| spelling | doaj.art-38e454c9024146759dbb67090e7b15622023-12-11T17:15:43ZengUniversity of Belgrade - Faculty of Agriculture, BelgradeJournal of Agricultural Sciences (Belgrade)1450-81092406-09682023-01-0168325326210.2298/JAS2303253R1450-81092303253RHeterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypesRameeh Valiollah0AREEO, Mazandaran Agricultural and Natural Resources Research and Education Center, Agronomic and Horticulture Crops Research Department, Sari, IranGenetic improvement in a crop, viz. Brassica species, through plant breeding essentially requires the presence of adequate genetic diversity within the gene pool. Winter rapeseed is known to be genetically different from spring rapeseed and can therefore be used for extending genetic diversity in the progenies produced via crossing methods. Using line×tester analyses of two spring types of testers and six lines of winter-type rapeseed varieties, heterotic patterns of phenological traits, plant height and seed yield were estimated. Significant mean squares between parents and crosses revealed significant heterosis for all the traits. Line×tester mean squares, indicating the non-additive genetic effects, were significant only for plant height and seed yield. High narrow-sense heritability estimates for phenological traits underline the importance of additive genetic effects and thus the efficiency of selection for improving these traits. Based on the significant and positive expression of heterosis effects for phenological traits and plant height in the winter parents, it was concluded that the F1 progenies had earlier and shorter maturity than the winter parents. F1 progenies were also early flowering, early maturing and taller than the spring-type parents. Significant positive heterosis of the crosses for seed yield was observed in 75% and 42% of F1 progenies compared to the spring and winter parents, respectively, indicating a higher yield potential of the F1 hybrids than the spring and winter parents.https://scindeks-clanci.ceon.rs/data/pdf/1450-8109/2023/1450-81092303253R.pdfheritabilityline×testerphenological traitsseed yield |
| spellingShingle | Rameeh Valiollah Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes Journal of Agricultural Sciences (Belgrade) heritability line×tester phenological traits seed yield |
| title | Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes |
| title_full | Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes |
| title_fullStr | Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes |
| title_full_unstemmed | Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes |
| title_short | Heterotic patterns in rapeseed (Brassica napus L.): Crosses between spring-type and winter-type genotypes |
| title_sort | heterotic patterns in rapeseed brassica napus l crosses between spring type and winter type genotypes |
| topic | heritability line×tester phenological traits seed yield |
| url | https://scindeks-clanci.ceon.rs/data/pdf/1450-8109/2023/1450-81092303253R.pdf |
| work_keys_str_mv | AT rameehvaliollah heteroticpatternsinrapeseedbrassicanapuslcrossesbetweenspringtypeandwintertypegenotypes |