Tomato varieties for Siberia - which ones to choose

The key to a high, stable yield is the correct selection of a variety suitable for the climate of a particular region. That is, tomato varieties for Siberia differ from varieties that produce good yields, for example, in Krasnodar.
In addition, it is important to decide where to cultivate tomatoes - in protected or open ground.
It should be taken into account that the hybrid has certain advantages compared to the usual variety: high yields, even in not very favorable conditions, smooth ripening, uniformity of plants, and others.
Yield varieties of tomatoes for Siberia
Bull's heart - one of the most beloved varieties by many. Its pulp is sugary and fleshy, and its skin is thin. With quality care, the fruits can reach half a kilogram. It produces good yields both in open and closed ground, but it requires certain care: the formation of a bush by constant pinching.
Siberian early ripening. The variety is mid-early, the fruits are smooth, red, medium size, excellent taste. Gives high yields when cultivated indoors. Average disease resistance.
Ground Gribovsky. Ripening occurs 100-117 days from planting. The fruits are intense red, slightly ribbed at the stalk, and have a good taste. The variety is resistant to diseases and cold.
Gina. The taste is excellent. Produces good yields in open ground and does not require special care.
Altai early. An early-ripening, productive variety, it takes 100-105 days from germination to ripening. The fruits are round-flat and have good taste.The weight of the largest fruits is 350-400 grams, on average - 125 grams.