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Broomrape-resistant sunflower hybrid Taizar
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A simple sunflower hybrid Taizar was developed at V.S. Pustovoit All-Russian Research Institute of Oil Crops as part of a breeding and genetic program for developing highly productive hybrids resistant to the new virulent races of broomrape by using the method of backcrossing in combination with an evaluation of resistance in each generation for the target gene Or7. The hybrid Taizar is of mid-early group of ripeness, it has a high yield, it is resistant to Orobanche cumana Wallr. (races A-G) and downy mildew (races 330, 710, 730, 334, 734). The line-restorer of pollen fertility VK 305 is the paternal form of the hybrid Taizar. The line was developed as a result of the introduction of the Or7 gene from the RG line by two backcrosses into the line VK 303, subsequent inbreeding and selection of broomrape-resistant genotypes. The line VK 305 has narrow widely spaced ray flowers strongly curved towards the back of the head, which can serve as a morphological marker of genetic purity.
All-Russia Research Institute of Oil Crops by Pustovoit V.S.
Title: Broomrape-resistant sunflower hybrid Taizar
Description:
A simple sunflower hybrid Taizar was developed at V.
S.
Pustovoit All-Russian Research Institute of Oil Crops as part of a breeding and genetic program for developing highly productive hybrids resistant to the new virulent races of broomrape by using the method of backcrossing in combination with an evaluation of resistance in each generation for the target gene Or7.
The hybrid Taizar is of mid-early group of ripeness, it has a high yield, it is resistant to Orobanche cumana Wallr.
(races A-G) and downy mildew (races 330, 710, 730, 334, 734).
The line-restorer of pollen fertility VK 305 is the paternal form of the hybrid Taizar.
The line was developed as a result of the introduction of the Or7 gene from the RG line by two backcrosses into the line VK 303, subsequent inbreeding and selection of broomrape-resistant genotypes.
The line VK 305 has narrow widely spaced ray flowers strongly curved towards the back of the head, which can serve as a morphological marker of genetic purity.
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