Source material from the VIR collection for hybrid breeding of multiple-ear maize
Background. Expanding the genetic polymorphism of maize is an effective way to increase its productivity by involving multiple-ear genotypes in breeding.Materials and methods. In 2007, 596 maize accessions from VIR were assessed at the Kuban Experiment Station of VIR. In 2020, 52 hybrids between mul...
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| Format: | Article |
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N.I. Vavilov All-Russian Institute of Plant Genetic Resources
2021-12-01
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| Series: | Труды по прикладной ботанике, генетике и селекции |
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| Online Access: | https://elpub.vir.nw.ru/jour/article/view/1062 |
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| author | V. N. Boyko E. B. Khatefov |
| author_facet | V. N. Boyko E. B. Khatefov |
| author_sort | V. N. Boyko |
| collection | DOAJ |
| description | Background. Expanding the genetic polymorphism of maize is an effective way to increase its productivity by involving multiple-ear genotypes in breeding.Materials and methods. In 2007, 596 maize accessions from VIR were assessed at the Kuban Experiment Station of VIR. In 2020, 52 hybrids between multiple-ear and single-ear maize lines were tested in the steppe zone of Kabardino-Balkaria at the site of the OTBOR Agrifirm. Useful agronomic traits were recorded, the coefficient of prolificacy (kmc) was calculated for the source lines and their hybrid progeny from crosses with a single-ear tester, and 52 parent lines were ranked according to the type of inheritance of the prolificacy feature.Results. Accessions that combined prolificacy with other useful agronomic traits were identified. The following accessions were selected for their plant height (score 5, 126–175 cm): k-8819, k-9054, k-15269, k-15355, k-15360, k-15331, k-15877, k-15442, k-15443, k-15445, k-8009, k-14344, k-15195, k-15226 and k-17385. Accessions that excelled in the height of the ear attachment for mechanized harvesting (score 5, 50–70 cm) were as follows: k-8819, k-15269, k-15355, k-15360, k-14394, k-14904, k-14979, k-14968, k-15292, k-15391, k-9289, k-15322, k-15439, k-15442, k-15443 and k-14344. Sources of the following traits were identified: long cob (score 9, > 20 cm): k-9054, k-4535, k-13730, k-14817 and k-14996; higher number of rows per ear (score 5–9, > 16 grain rows): k-14904, k-14979, k-14968, k-15442, k-15330, k-15322 and k-9257; and higher number of grains in a row (score 5–9, > 31 grains per row): k-14904, k-14996, k-15639, k-15353, k-15330, k-15322, k-15344, k-15281, k-15439, k-9357 and k-15237. Ranking 52 accessions according to the test cross results showed that 9 of them produced progeny of the maternal type (no more than one ear), 26 of the intermediate type (1.1–1.5 ears per plant), 11 of the paternal type (1.6–2,0 ears) and 6 of heterotic type (more than 2 ears). |
| format | Article |
| id | doaj-art-e8d77794f0a6432197fe264317ea9987 |
| institution | Kabale University |
| issn | 2227-8834 2619-0982 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | N.I. Vavilov All-Russian Institute of Plant Genetic Resources |
| record_format | Article |
| series | Труды по прикладной ботанике, генетике и селекции |
| spelling | doaj-art-e8d77794f0a6432197fe264317ea99872025-02-03T08:31:14ZengN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesТруды по прикладной ботанике, генетике и селекции2227-88342619-09822021-12-011824273510.30901/2227-8834-2021-4-27-35558Source material from the VIR collection for hybrid breeding of multiple-ear maizeV. N. Boyko0E. B. Khatefov1N. I. Vavilov All-Russian Institute of Plant Genetic Resources, Kuban Experimental Station of VIRN. I. Vavilov All-Russian Institute of Plant Genetic ResourcesBackground. Expanding the genetic polymorphism of maize is an effective way to increase its productivity by involving multiple-ear genotypes in breeding.Materials and methods. In 2007, 596 maize accessions from VIR were assessed at the Kuban Experiment Station of VIR. In 2020, 52 hybrids between multiple-ear and single-ear maize lines were tested in the steppe zone of Kabardino-Balkaria at the site of the OTBOR Agrifirm. Useful agronomic traits were recorded, the coefficient of prolificacy (kmc) was calculated for the source lines and their hybrid progeny from crosses with a single-ear tester, and 52 parent lines were ranked according to the type of inheritance of the prolificacy feature.Results. Accessions that combined prolificacy with other useful agronomic traits were identified. The following accessions were selected for their plant height (score 5, 126–175 cm): k-8819, k-9054, k-15269, k-15355, k-15360, k-15331, k-15877, k-15442, k-15443, k-15445, k-8009, k-14344, k-15195, k-15226 and k-17385. Accessions that excelled in the height of the ear attachment for mechanized harvesting (score 5, 50–70 cm) were as follows: k-8819, k-15269, k-15355, k-15360, k-14394, k-14904, k-14979, k-14968, k-15292, k-15391, k-9289, k-15322, k-15439, k-15442, k-15443 and k-14344. Sources of the following traits were identified: long cob (score 9, > 20 cm): k-9054, k-4535, k-13730, k-14817 and k-14996; higher number of rows per ear (score 5–9, > 16 grain rows): k-14904, k-14979, k-14968, k-15442, k-15330, k-15322 and k-9257; and higher number of grains in a row (score 5–9, > 31 grains per row): k-14904, k-14996, k-15639, k-15353, k-15330, k-15322, k-15344, k-15281, k-15439, k-9357 and k-15237. Ranking 52 accessions according to the test cross results showed that 9 of them produced progeny of the maternal type (no more than one ear), 26 of the intermediate type (1.1–1.5 ears per plant), 11 of the paternal type (1.6–2,0 ears) and 6 of heterotic type (more than 2 ears).https://elpub.vir.nw.ru/jour/article/view/1062<i>zea mays</i> l.two- three- and four-ear maizegrain yielduseful agronomic traitshybridtest cross |
| spellingShingle | V. N. Boyko E. B. Khatefov Source material from the VIR collection for hybrid breeding of multiple-ear maize Труды по прикладной ботанике, генетике и селекции <i>zea mays</i> l. two- three- and four-ear maize grain yield useful agronomic traits hybrid test cross |
| title | Source material from the VIR collection for hybrid breeding of multiple-ear maize |
| title_full | Source material from the VIR collection for hybrid breeding of multiple-ear maize |
| title_fullStr | Source material from the VIR collection for hybrid breeding of multiple-ear maize |
| title_full_unstemmed | Source material from the VIR collection for hybrid breeding of multiple-ear maize |
| title_short | Source material from the VIR collection for hybrid breeding of multiple-ear maize |
| title_sort | source material from the vir collection for hybrid breeding of multiple ear maize |
| topic | <i>zea mays</i> l. two- three- and four-ear maize grain yield useful agronomic traits hybrid test cross |
| url | https://elpub.vir.nw.ru/jour/article/view/1062 |
| work_keys_str_mv | AT vnboyko sourcematerialfromthevircollectionforhybridbreedingofmultipleearmaize AT ebkhatefov sourcematerialfromthevircollectionforhybridbreedingofmultipleearmaize |