STATEMENT OF THE TRUE HETEROZIS AND DEGREE DOMINANCE IN F1 TOMAT HYBRIDS OBTAINED ON A STERILE BASIS

  • A. P. Samovol Institute of Vegetables and Melons growing of NAAS https://orcid.org/0000-0002-6798-7378
  • S. І. Kornienko Institute of Vegetables and Melons growing of NAAS
  • T. N. Zamytskaya Institute of Vegetables and Melons growing of NAAS
Keywords: Tomato, hybrids F1, true heterosis, degree of dominance, biologically valuable components in fruits

Abstract

The manifestation of the heterosis effect and degree of dominance over a complex of quantitative, including economically valuable, signs in tomato F1 hybrids obtained on a sterile basis was investigate. It ware found that under the conditions of the greenhouse only a high frequency (from 58 to 67% and 100%) of the studied hybrids, with a positive and negative heterotic effect, was manifested only in three separate quantitative and qualitative features. Combinations of 83% of crossing with negative true heterosis based on "length of vegetation period" were reveal, which indicates the effect of early ripeness. It ware shown that in the field conditions, with negative true heterosis, all 9 combinations of crossing were distinguished for the signs of "average fetal mass", "titrated acids" and "vitamin C". And also found that, with the exception of two signs: "the content of dry matter in fruits" and "titrated acids," the vector of orientation on other grounds: average fetal mass," "total sugar content," and "vitamin C content" Obtained in the conditions of a greenhouse.

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Published
2019-07-19
How to Cite
Samovol, A., Kornienko, S., & Zamytskaya, T. (2019). STATEMENT OF THE TRUE HETEROZIS AND DEGREE DOMINANCE IN F1 TOMAT HYBRIDS OBTAINED ON A STERILE BASIS. Vegetable and Melon Growing, (62), 259-271. Retrieved from https://vegetables-journal.com/index.php/journal/article/view/129