ovoshchiОвощи РоссииVegetable crops of Russia2072-91462618-7132Федеральный научный центр овощеводства10.18619/2072-9146-2022-1-5-11ovoshchi-1912Research ArticleСЕЛЕКЦИЯ И СЕМЕНОВОДСТВО СЕЛЬСКОХОЗЯЙСТВЕННЫХ РАСТЕНИЙBREEDING AND SEED PRODUCTION OF AGRICULTURAL CROPSВлияние степени повреждения листьев после обработки низкой температурой (охлаждения) на рост и репродуктивные параметры перца острогоEffect of leaf cold damage after chilling temperature treatment on growth and reproductive parameters of chilli pepper plantshttps://orcid.org/0000-0001-7055-9932РажаметовШ. Н.RajametovSh. N.

Ражаметов Шерзод Нигматуллаевич  – PhD (сельское хозяйство), докторант-исследователь, Отдел овощных культур

г. Вонжу, 55365

Sherzod Nigmatullayevich Rajametov – PhD (Agriculture), Post Doctoral Researcher

Wanju, 55365

sherzod_2004@list.ruЯнгЫн Ё.YangE. Yo.

Янг Ын-Ёнг – PhD (сельское хозяйство), Руководитель проекта, Отдел овощных культур

г. Вонжу, 55365

Eun-Young Yang – Project Manager

Wanju, 55365

yangyang2@korea.krhttps://orcid.org/0000-0002-8321-4826ЧоМ. Ч.ChoM. Ch.

Чо Мёнг Чеол – PhD (сельское хозяйство), зав. лабораторией, Отдел овощных культур

г. Вонжу, 55365

Myeong-Cheoul Cho – PhD (Agriculture), Head of Laboratory

Wanju, 55365

chomc@korea.krhttps://orcid.org/0000-0003-0178-6765ЖеонгХ. Б.JeongN. B.

Жеонг Хёо Бонг – старший научный сотрудник, Отдел овощных культур

г. Вонжу, 55365

Hyo-Bong Jeong – Senior Researcher

Wanju, 55365

bong9846@korea.krНациональный научный институт плодоовощеводства и лекарственных растений, Администрация развития сельского хозяйстваЮжная КореяNational Institute of Horticultural & Herbal Science, Rural Development AdministrationKorea, Republic of20220403202201511Copyright © Ражаметов Ш.Н., Янг Ы.Ё., Чо М.Ч., Жеонг Х.Б., 20222022Ражаметов Ш.Н., Янг Ы.Ё., Чо М.Ч., Жеонг Х.Б.Rajametov S.N., Yang E.Y., Cho M.C., Jeong N.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.vegetables.su/jour/article/view/1912Актуалность

Актуалность. Растения перца чувствительны к пониженным температурам на всех этапах роста, и низкие температуры являются основным фактором, влияющим на рост растений, рост и развитие плодов и продуктивность. Оценка и идентификация низкотемпературных (LT) устойчивых генотипов перца на разных стадиях роста актуальна в селекционной программе для создания новых сортов. В настоящем исследовании мы исследовали влияние повреждения листа в пределах 25% (LCD) после обработки низкой температурой в стадии проростков на рост, вегетативные и репродуктивные параметры образцов перца с различной холодоустойчивостью.

Материал и методика

Материал и методика. Использовали два образца перца «PE-J-2» и «Neokgwang», отобранные как устойчивый и чувствительный к низким температурам на ювенильной стадии развития (стадия 3-4 настоящих листьев), соответственно. Проростки выбранных образцов перца с 25% визуальными повреждениями зеленой части листа от низких температур (становятся слегка пожелтевшими-беловатыми или высушенными) и растения в контроле (NT) выращивали в условиях теплицы (день/ночь 30…32/22…24°C) в течение 10 недель, чтобы оценить влияние LCD на вегетативные и репродуктивные параметры образцов перца после предварительной обработки охлаждением. У растений перца были измерены вегетативные параметры, такие как высота растения (PH), длина листа (LL) и ширина (LW), количество междоузлий (NI), длина главной оси (LMA), свежая масса растений (PFW) и корней (RFW), а также репродуктивное признаки: количество цветков (NFL) и плодов (NFR), коэффициент завязывания плодов (FS), длина (FL) и диаметр (FD) плодов, общая продуктивность растения (TY). Эксперимент был полностью рандомизирован. Статистический анализ выполняли с использованием SAS Enterprise Guide 7.1 (SAS Institute Inc., Кэри, Северная Каролина, США).

Результаты

Результаты. В результате исследования было выявлено, что отобранные образцы острого перца, холодоустойчивые на стадии проростка, не всегда могут проявлять хорошие агрономические показатели на стадиях роста, и они могут колебаться в зависимости от особенностей генотипа. Проростки с повреждением листьев в пределах 25% могут существенно повлиять на рост вегетативных и репродуктивных параметров растений перца. Выявлены более четкие корреляции между некоторыми вегетативными и репродуктивными параметрами у NT и LCD растений.

Relevance

Relevance. Pepper is sensitive to chilling temperatures in all growth stages and low temperatures are main factors affecting plant growth, fruit growth and development and productivity. Evaluation and identification low temperature (LT) tolerant pepper genotypes at different growth stages is actual in breeding program for developing new cultivars. In present study we investigated the effect of the leaf cold damage within 25% (LCD) after chilling treatment in seedling stage on vegetative and reproductive traits of pepper accessions with different cold tolerance.

Material and methods

Material and methods. In this study two pepper accessions “PE-J-2” and “Neokgwang” selected as chilling tolerant and susceptible in juvenile stage (3-4 true leaf stage), were used respectively. The seedlings of the selected pepper accessions with 25% visual cold damages of leaf green part (become lightly yellowed-whited or desiccated-dried) and control non-treated (NT) were grown in a glasshouse condition (D/N 30-32/22-24°C) for 10 weeks to evaluate the effect of LCD on pepper accessions vegetative and reproductive parameters after chilling pre-treatment. In pepper plants the vegetative parameters such as plant height (PH), leaf length (LL) and width (LW), number of internodes (NI), length of main axis (LMA), plants fresh weight (PFW) and roots fresh weight (RFW), and reproductive the number of flowers (NFL) and fruits (NFR), fruit set ratio (FS), fruit length (FL) and diameter (FD), total yield per plant (TY) were measured. The experimental design of this study was completely randomized. Statistical analysis was performed using the SAS Enterprise Guide 7.1 (SAS Institute Inc., Cary, North Carolina, USA).

Results

Results. According to the research result several accessions were identified: the accessions screened in juvenile stage as cold tolerant cannot always manifest good some agronomical traits performance at growth stages and it may range depending on the genotype specific features. The seedlings with LCD within 25% may significantly affect the vegetative and reproductive parameters of pepper plants. The phenomenon was recorded more distinctive in the correlations between some vegetative and reproductive parameters among NT and LCD plants.

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The authors declare that there are no conflicts of interest present.