A model of a commercial strawberry variety for the conditions of central Russia

Abstract

The article presents a model of a commercial variety of strawberry for the conditions of central Russia. This model covers 40 features and properties, which are combined into three groups: 1) plant resistance to a complex of adverse abiotic and biotic factors (adaptive potential); 2) productivity and quality of products; 3) manufacturability of the variety. In the middle zone of Russia, adapted strawberry varieties should develop normally and produce a high quality crop of 20-25 t/ha with the sum of temperature from 1800 to 2000 oC and the duration of the vegetative period from 130 to 180 days. They must withstand spring frosts, sharp and prolonged cooling during the vegetative period, more frequent droughts and high temperatures up to +36 oC, early-winter frosts up to -25 oC in the absence of snow, the frosts up to -36 oC in winter under snow cover, temperature drops from 0…+3 oC to -20 oC in December-March after thaws and have fi eld resistance to numerous diseases and pests. The parameters of high productivity of a biennial strawberry bush are: the number of fl ower stalks ≥10 pieces, the number of berries ≥50 and the average weight of fruits for all collections is more than 10.0 g. The ideal strawberry variety should contain >12 % RSV, >8 % sugars, >80 mg% ascorbic acid, >80 mg% anthocyans and no more than 1.5 % organic acids in berries. In addition to the high taste qualities and biochemical composition, strawberry berries should be attractive, one-dimensionally, have good transportability and keeping quality. According to the ideal variety model, the crushing force of strawberry berries, which determines their preservation during harvesting and long-term transportation, must be at least 10.0 N. The combination of the above-mentioned features and properties in one genotype is a task of the future, but systematic researches in this direction should be carried out constantly. The creation and gradually updating of sources and donors for each of breeding features on a genetically diverse basis will accelerate the implementation of this model into specifi c varieties.

Rootstocks and Varieties of Fruits, Berry Crops, and Grapes, Used for Intensive Gardening in Kazakhstan

“…In this regard, F&VRI has obtained a unique collection of rootstocks and varieties from various fruit growing regions of the world, as well as varieties of local selection, which has replenished the agro-diversity of fruit crops in Kazakhstan. Long-term studies have identified a group of rootstocks with positive economic and biological characteristics, in particular, good adaptability to local soil and climatic conditions of growth, contributing to high productivity of trees with good fruit quality [6].…”

Description of the genetic collection of strawberry (<i>Fragaria × ananassa</i> Duch.) cultivars according to the components of their fruit antioxidant complex

“…В Российской Федерации по каждой плодовой и ягодной культуре разработаны, постоянно дополняются и уточняются параметры по накоплению важнейших питательных и биологически активных веществ. В плодах земляники современных промышленных сортов желательно содержание биологически активных веществ на следующем уровне: аскорбиновая кислотаболее 80 мг/100 г; антоцианы -более 80 мг/100 г (Kulikov et al, 2020). Проведенный нами корреляционный анализ между содержанием аскорбиновой кислоты и антоцианов показал отсутствие связи между данными показателями: коэффициент корреляции (r) составил -0,18 (Zhbanova et al, 2019).…”

Anthocyanins and catechins in the berries of new strawberry cultivars grown in the conditions of the Orel region

“…Common garden strawberry is loved by the population for its unique taste and aroma, which explains its demand [3,4]. The composition of its berries includes easily digestible sugars, organic acids, ascorbic acid, phenolic (P-active) compounds, etc., which have an undeniably beneficial effect on the human body, have high physiological activity [5][6][7][8][9][10] and are part of the Mediterranean diet [11]. The consumption of strawberries significantly improves the overall antioxidant status of human blood [1].…”