UDC 631.52:635.62
https://doi.org/10.25630/PAV.2020.12.31.001
Piskunova T.M., Mytieva Z.F.
To expand the area of growing and promote pumpkin crop in the Northern regions of the country, cold-resistant and ultra-ripe cultivars are needed. The purpose of the work: to study the collection of pumpkin of VIR and identify sources of many fruits setting to supply breeders with valuable source material. The research material: samples of pumpkin collection of VIR of different geographical origin. The research was carried out in 2006-2016 in the fields of scientific and production base «Pushkin and Pavlovsky laboratories VIR» (St. Petersburg). Soil and climatic conditions of the study zone are typical for the region. The soils are sod-podzolic, sandy loam. The sum of temperatures for the growing season (may-september) - 2020-2065 °C (average 2049 °C). The amount of precipitation varied from 275 to 355 mm (average 325 mm). Method of cultivation – non seedlings, agricultural machinery common to the culture. The morphological description of the samples and their assessment on biological and economically valuable features were carried out according to the methodical instructions of the VIR and the classifier of cultural species of the genus Cucurbita. As a result of the study of pumpkin samples of the VIR collection, 47 multi-fruit samples were identified, forming 5-8 portion fruits on the plant. Of these, the most prolific were: Baby Hubbard (K-4860), Vegetable Spaghetti (K-3353) and Little Gem (K-4383) from Canada, Baby Pam (K-5170), Bush everbearing (K-2438) and Mini jack (K-4812) from the United States, Red (t.k-2072), Red jewel (K-5383) and Red novelty (K-5384) from China, Cachi INTA (K-4269) and Cachi Magni INTA (K-4105) from Argentina, Slastena (K-4935), Dyujmovochka (K-5116), b/n (K-2787) from Russia, Dynia Makaronova (K-4471) from Poland, Local (K-4927) from Bulgaria. Consistently high level of productivity showed samples Baby Hubbard (Canada), Cachi Magni INTA (Argentina), Red spring (Belgium), Cachi INTA (Argentina), Local (Russia), Local (Bulgaria). Bush habitus of the plant, contributing to a longer period of mechanized processing, was noted in 13 multi-fruits specimens. All multiple samples had good and excellent taste qualities (4-5 points). The comparative assessment of these samples on the level of ripeness, productivity, quality of fruits is carried out. Selected and recommended as a starting material for breeding samples, characterized by early maturity, stable productivity, having a bush habit of the plant and high taste.
Key words: squash, collection, productivity, quality of fruits, initial material.
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For citing: Piskunova T.M., Mut’eva Z.F. The gene pool of a squash of the VIR collection for breeding on many fruits setting. Potato and Vegetables. No1. Pp. 32-34 (In Russ.). https://doi.org/10.25630/PAV.2020.12.31.001
