Particularities of inheritance of ripening time, yield capacity and vulnerability to powdery mildew by peach

The research comprised hybridologycal analysis of inheritance of such important quantitative traits as ripening time, yield capacity and vulnerability to powdery mildew (Sphaerotheca pannosa Lev. var. percicae Woronich.) in the hybrid peach progeny.
As a result of research on particularities of segregation of ripening time in the hybrid progeny, it was detected that it is being inherited neutrally or with inclination toward one of the parents, according to their donor characteristics.
The cultivar ‘Favorita Morettini’ was detected as the donor of early ripening time.
Gamma-irradiation of seeds at doses of 40, 60 and 80 Gy increased the variability of ripening time in the hybrid progeny (V=37.9-66.7%) compared to control (25.7%). The number of mid and early-mid season seedlings has increased at all dose levels, especially of 60 and 80 Gy.
Inheritance of yield capacity was of a neutral nature or with inclination toward one of parents, according to their donor characteristics.
The cultivars ‘Chekhov’, ‘Tovarishch’, ‘Favorita Morettini’, ‘Sochniy’ were selected as donors of yield capacity.
Hybridologycal analysis for resistance to powdery mildew allowed us to detect following donors of low vulnerability to this disease: the forms Baby Gold-5 × Stoyka 81-1211, Nektadiana I₁ 26-76 and the cultivar ‘Stoyka’.

XXX International Horticultural Congress IHC2018: II International Symposium on Plant Breeding in Horticulture

A. Smykov, O. Fedorova, I. Ivashchenko

peach, hybridological analysis, inheritance, quantitive characteristics, donors

https://doi.org/10.17660/ActaHortic.2020.1282.46