Scientific basis of seed system of southern Ukraine

Vlashchuk, A. M.; Pryshchepo, M.M.; Konashchuk, O.P.

doi:10.32848/0135-2369.2019.72.15

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В Україні в останні роки спостерігається тенденція до стрімкого збільшення посівних площ під ріпаковою культурою. За планування виробництва ріпаку, зо-крема високих його врожаїв, виникає потреба у виведенні високопродуктивних сортів [1]. Селекційні програми ефективно використовують генетичну дивергенцію в зародковій плазмі після оцінки генетичного різноманіття [2].…”

Section: український інститут експертизи сортів рослинunclassified

Determination of winter rapeseed (Brassica napus L.) polymorphism based on SSR markers and morphological characters

Piskova,

Kostenko,

Shliakhtun

et al. 2023

Agrobìologìâ

View full text Add to dashboard Cite

The study presents the results of the genetic diversity estimation of winter rapeseed by molecular genetic analysis and the determination of polymorphism with morphological traits. The study aims to determine winter rapeseed hybrids polymorphism by SSR markers and the marker morphological characteristics. Twelve winter rapeseed hybrids which were examined within DUS testing and their 24 hereditary components were studied in 2021–2022. The study of rapeseed genotypes genetic diversity was carried out in 2021. It was determined that the majority of studied hybrids and their hereditary components by studied SSR markers are characterized with alleles of the same sizes and are homozygotic by these markers. Besides, it was found that the presence of only on one allele was identifed in hereditary components which was found in hybrids. This distribution allows to check the hybrid formula and to identify them. It was determined that the most polymorphic marker was Na12-A02, PIC is 0.77. The lowest value of PIC was obtained for Na12-E02 marker (0.47). On the average, for studied markers PIC is 0.66 which indicates the evenness of identifed alleles distribution by SSR markers among studied winter rapeseed genotypes. As results of cluster analysis, we obtained fve clusters of the studied hybrids by 8 SSR markers. The hybrids with genetic distances of 2.45 were the most similar hybrids. It was found that the hybrids with genetic distances of 5.83 and 5.74 were the most distinct. Three clusters were obtained as results of the cluster analysis based on morphological traits. It was determined that the most similar hybrids were the ones with genetic distances of 3.46. It was found that the most distinct hybrids had the genetic distances of 5.299.38. Thus, taking into account the various distribution of the studied genotypes by the SSR markers and morphological characteristics, SSR markers can be used as additional tool for the distinctness determination. Key words: genetic distances, winter rapeseed, allele frequencies, РІС, genetic diversity, SSR markers.

show abstract

Section: український інститут експертизи сортів рослинunclassified

Determination of winter rapeseed (Brassica napus L.) polymorphism based on SSR markers and morphological characters

Piskova,

Kostenko,

Shliakhtun

et al. 2023

Agrobìologìâ

View full text Add to dashboard Cite

show abstract

“…Heterospermia is primarily associated with seed size -an important biological and economic indicator that characterizes the suitability of seeds for sowing and their yielding qualities. It is known from publications that the use of the best, ie conditioned, seeds for sowing is equivalent in the effect of fertilizers or better tillage [7]. Seeds of the same batch, or from one plant, or from one inflorescence may differ in their anatomical, morphological, physical, chemical, physiological and genetic characteristics.…”

mentioning

confidence: 99%

Influence of seed heterogeneity on sowing and yielding parameters of rice cultivars

Dovbush,

Shpak,

Shpak

et al. 2022

СН

View full text Add to dashboard Cite

Purpose and objectives. The cultivation technology development was aimed at maximizing the potential productivity of the crop. To accomplish this, studies of heterogeneity are not only of theoretical but also of practical value, as knowledge of this phenomenon can open new opportunities to improve seed quality. Materials and methods. In 2019–2020, the field and laboratory experiments were carried out in the rice crop rotation of the Institute of Rice of NAAS. The farming technique of the experiment met the requirements for experimentation, as Dospekhov B.A. described. Results and discussion. This article covers the results on the performance patterns of new rice cultivars and their seed parameters, depending on the matrical heterogeneity. The yield in the field experiments across the study years ranged 8.05 to 11.68 t/ha, depending on a combination of the factors under investigation. It was found that the rice produced high yields in the plots sown with seeds from the upper part of the panicle, regardless of the cultivar. In the plots sown with seeds from the lower part of the panicle, there was a shortfall of planting material from 1.85 to 2.30 t/ha in comparison with the plots sown with seeds from the upper part of the panicle. Therefore, sowing seeds from the lower part of the panicle means irrational use of planting material, resulting in thinned crops and decreased yields, which in turn leads to the production of low-quality seeds. Conclusions. Thus, the matrical heterogeneity-based selection of rice seeds from the upper part of the panicle in the primary stages of seed production is an important technological approach. This contributes to an increase in the yield and quality of rice seeds, allowing for accelerated implementation of new rice cultivars into production.

show abstract

Scientific basis of seed system of southern Ukraine

Cited by 2 publications

References 0 publications

Determination of winter rapeseed (Brassica napus L.) polymorphism based on SSR markers and morphological characters

Determination of winter rapeseed (Brassica napus L.) polymorphism based on SSR markers and morphological characters

Influence of seed heterogeneity on sowing and yielding parameters of rice cultivars

Contact Info

Product

Resources

About