Inheritance of the main quantitative traits in sweet sorghum hybrids F<sub>1</sub>

Kovtunova, N. A.; Kovtunov, V. V.; Popov, A. M.; Volodin, A.B.; Шишова, Е. А.; Romanyukin, A. E.

doi:10.1051/e3sconf/202017501012

Cited by 10 publications

(1 citation statement)

References 9 publications

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“…ности, так и по качеству продукции, стрессоустойчивостью [5][6][7]. Сорт -это главный фактор увеличения урожайности и производства зерна или зеленой массы.…”

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Estimation of productivity of the Sudan grass varieties of different groups of maturity

Ковтунова¹,

Kovtunov²,

Шишова³

2022

Agrarian Bulletin of The

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Abstract. Each region of cultivation requires a set of varieties that are able to make the most out of natural resources. For North Caucasus of Russia, only 6 varieties are approved for cultivation, which are less than 20 years old. Therefore, the development of new Sudan grass varieties has always been an urgent issue for breeders. The variety is the main factor in improving productivity and grain or green mass production. One and the same variety under different cultivation conditions has different plant height, tilling capacity and leaf formation. The purpose of the current study was to determine productivity and adaptability of Sudan grass varieties of different groups of maturity and to identify highly productive ones for the south of Russia. Methods. The objects of the current study were the varieties of different groups of maturity. The study was carried out on the fields of the FSBSI “Agricultural Research Center “Donskoy” in 2019–2021. The soil was an ordinary carbonate chernozem, with 3.6 % of humus in the arable layer. Soil preparation and cultivation activities were carried out in accordance with the agrotechnical recommendations for sorghum cultivation in the Rostov region. The variety adaptability was estimated by the method of L. A. Zhivotkov. Meteorological conditions during the years of study (2019–2021) were contrasting, which made it possible to estimate adaptability of the varieties. Results. There has been established that green mass productivity has a close positive correlation (r = 0.79) with the amount of precipitation and a mean negative correlation (r = –0.59) with the average air temperature. For 3 years of study the most early maturing varieties were at the similar level of 21–23 t/ha in total for two cuts. The variety Yaktik was identified as the most productive in the early maturing group with 31 t/ha. In the middle-early maturing group the variety Gratsiya produced 43 t/ha. In the middle maturing group, the varieties ST-90, Chernoplenchataya 10 and Alisa were the best ones with 43 t/ha, 42 t/ha 41 t/ha, respectively. The mean adaptability coefficient varied within 0.59-1.47. The varieties Gratsiya, ST-90 and Chernoplenchataya 10 have shown the best adaptability to cultivation conditions, being stable in their productivity through the years of study.

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Estimation of productivity of the Sudan grass varieties of different groups of maturity

Ковтунова¹,

Kovtunov²,

Шишова³

2022

Agrarian Bulletin of The

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The use of the Ugandan initial grain sorghum forms in the hybridization of the sorghum varieties for forage and food

Kovtunov

Kovtunova

2021

E3S Web Conf.

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The problem to develop new early maturing grain sorghum varieties adapted to mechanized harvesting with high productivity and feed advantages, is of great urgency. The purpose of the current work was to study the inheritance of the main economically valuable traits in the first generation hybrids developed in the hybridization between samples of different ecological and geographical origin. In the first generation hybrids Zernogradskoe 88 × Seso 1 and Zernogradskoe 88 × Narosorg 1, there was identified the improvement of 1000-grain weight, number of grains per panicle, and length of a peduncle in comparison with the initial parental forms. In the hybrid combination obtained as a result of hybridization of the varieties Zernogradskoe 88 and Seso 3 there was not identified any positive manifestation of heterosis for the breeding process in the main studied traits. According to the trait ‘plant height’ in all combinations, there was identified overdominance of high-growing forms. According to the protein percentage in grains there was established depression or dominance of lower values of the trait. The inheritance of the trait ‘length of vegetation period’ in the studied hybrids corresponded to the partial dominance of both lower and higher values of the trait.

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Sorghum-Sudanese hybrid Dobrynya as a result of heterosis selection

Kovtunova,

Romanyukin,

Kovtunov

et al. 2023

E3S Web of Conf.

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Sorghum-Sudanese hybrids, due to the heterosis effect, have not only increased productivity, but also uniformity, increased vitality, as well as resistance to various diseases and stress factors in comparison with parental forms. The purpose of the work: to characterize the new hybrid Dobrynya, created as a result of heterosis selection, according to the main morphological, biological, economically valuable indicators. The studies were carried out at the Federal State Budgetary Scientific Institution, Agrarian Research Center “Donskoy” (ARC “Donskoy”). The soil of the experimental plot is ordinary carbonate chernozem. The advantages of the hybrid include high foliage (13 leaves per plant) - 39-41% of the leaf mass of plants, good protrusion of the legs (30-35 cm), succulence, tillering, cold resistance. The duration of the period “sprouts-heading” on average for 2019-2022. was 55 days (mid-season), which is 5 days less than the standard. Sorghum-Sudanese hybrid Dobrynya is characterized by a high yield of green mass - 63 t/ha (in total for 2 cuttings) and dry matter - 13.0 t/ha, which is higher than the standard by 28.6 and 31.3%, respectively. -essentially. And in terms of the content of crude protein and the collection of digestible protein, it significantly exceeds it by 1.1% and 0.24 t/ha. According to the results of the assessment in natural conditions, Dobrynya is distinguished by high or practical resistance to loose smut and bacteriosis. The sorghum-Sudanese hybrid has been included in the State Register of Breeding Achievements since 2023 and is recommended for use for green fodder and silage in the Central Black Earth, North Caucasus and Lower Volga regions of Russia.

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Inheritance of the main quantitative traits in sweet sorghum hybrids F₁

Cited by 10 publications

References 9 publications

Estimation of productivity of the Sudan grass varieties of different groups of maturity

Estimation of productivity of the Sudan grass varieties of different groups of maturity

The use of the Ugandan initial grain sorghum forms in the hybridization of the sorghum varieties for forage and food

Sorghum-Sudanese hybrid Dobrynya as a result of heterosis selection

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Inheritance of the main quantitative traits in sweet sorghum hybrids F1

Cited by 10 publications

References 9 publications

Estimation of productivity of the Sudan grass varieties of different groups of maturity

Estimation of productivity of the Sudan grass varieties of different groups of maturity

The use of the Ugandan initial grain sorghum forms in the hybridization of the sorghum varieties for forage and food

Sorghum-Sudanese hybrid Dobrynya as a result of heterosis selection

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Product

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Inheritance of the main quantitative traits in sweet sorghum hybrids F₁