ASSESSMENT OF MORPHOPHYSIOLOGICAL AND REPRODUCTIVE INDICATORS OF FIRSTMATURED HYBRID FORMS OF STURGEON

2020 ◽  
Author(s):  
A.B. Akhmetzhanova ◽  
◽  
Zakari Miburo ◽  
S.V. Ponomarev ◽  
Y.V. Fedorovykh ◽  
...  
Keyword(s):  
Aquatic Environment ◽  
Physiological Parameters ◽  
Volga Region ◽  
Russian Sturgeon ◽  
Hybrid Form ◽  
Lower Volga Region ◽  
Lower Volga ◽  
Winter Temperatures ◽  
Siberian Species ◽  
Hybrid Forms

The article presents data on morphological and physiological parameters of first-matured females of Russian sturgeon and its hybrid form with a Siberian species, grown in artificial conditions by LLC “Akvatrade”, operating in the Lower Volga region (Astrakhan region). It was found that Russian sturgeon juveniles adapt less satisfactorily to the low winter temperatures of the aquatic environment in comparison with hybrid forms with the Siberian species. As for the offspring obtained from hybrid females, their resistance to low winter temperatures of the aquatic environment was higher, most likely due to features inherited from the Siberian species.

Comparative evaluation of breeding lines of sugar sorgo in competitive variety testing

2020 ◽  
Author(s):  
E. A. Vertikova ◽  
Keyword(s):  
Comparative Evaluation ◽  
The State ◽  
Volga Region ◽  
Lower Volga Region ◽  
Breeding Lines ◽  
Variety Trial ◽  
Lower Volga ◽  
Variety Testing

In a competitive variety trial, promising selection lines of sugar sorghum were studied in the Lower Volga region. Based on a set of signs, the best lines were identified, which are recommended for transfer to the State Variety Testing. Breeding lines, which are distinguished by high values of commercially valuable traits, can be used in planned crosses to create highly productive varieties and hybrids of sugar sorghum.

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