Question

У томатов красная окраска плодов доминирует над желтой, а нормальная высота растения над карликовым. Имеют сорта желтоплодный с нормальной высотой и красноплодный карликовый. Как целесообразнее из этих сортов получить новые: красноплодные нормальные, желтоплодные карликовые? Какой сорт получить легче?

Answer 1

Красноплодные нормальные получить легче, т.к их можно получить при одном скрещивании двух этих сортов. Рецессивные можно получить только если красноплодый карликовый имеет генотип Aabb ( он также может иметь AAbb), и даже тогда, только 25% будут желтоплодыми карликовыми.
Надеюсь, что помогла;)

Answer 2

Tomato Varieties and Traits

Tomatoes come in a variety of colors, including red and yellow. The color of the fruit is determined by the presence of specific pigments. In some tomato varieties, the red color is dominant over the yellow color. Additionally, tomato plants can vary in height, with some being normal-sized and others being dwarf or compact.

Breeding New Varieties

To breed new tomato varieties with specific traits, such as red-fruited normal-sized or yellow-fruited dwarf plants, several breeding techniques can be employed. One common approach is crossbreeding, where two different tomato varieties with desired traits are crossed to produce offspring with a combination of those traits.

In the case of wanting to obtain red-fruited normal-sized plants and yellow-fruited dwarf plants, the following breeding strategies can be considered:

1. Crossbreeding a red-fruited normal-sized variety with a yellow-fruited dwarf variety: By crossing a red-fruited normal-sized tomato variety with a yellow-fruited dwarf variety, it is possible to obtain offspring that inherit the red fruit color and normal height from one parent and the yellow fruit color and dwarfism from the other parent. This can be achieved by carefully selecting and crossing the desired parental varieties.

2. Selective breeding: Another approach is to selectively breed tomato plants that exhibit the desired traits. This involves selecting individual plants with the desired fruit color and plant height and allowing them to reproduce. Over successive generations, the offspring with the desired traits can be further selected and bred to stabilize the traits.

Ease of Obtaining New Varieties

Determining which variety is easier to obtain depends on various factors, including the availability of parental varieties, the compatibility of the desired traits, and the breeding techniques used. Without specific information about the parental varieties and breeding goals, it is difficult to determine which variety would be easier to obtain.

It is important to note that breeding new tomato varieties can be a complex and time-consuming process that requires expertise in plant genetics and breeding techniques. It may be beneficial to consult with plant breeders or experts in the field to determine the most suitable approach for obtaining the desired tomato varieties.