Abstract: The tomato variety‘BY002’was developed through hybridization,with the self-selected multi-gene polygenic line‘SL034’as the female parent and the self-selected new line‘LF2177’as the male parent. It is a mid-maturing,high-quality F₁ variety that is resistant to cucumber mosaic virus,fusarium wilt,leaf mold,and root-knot nematode,and is high-yielding and stable. The first flowering node of this variety is at the 8th to 9th node,with mainly simple inflorescences. The flowering period lasts for 60 days and the maturity period is 102 days. The mature fruit is pink,round,without green shoulders,with uniform fruit size. Each cluster bears 5 to 6 fruits,with an average single fruit weight of about 230 g and a firmness of 0.87 kg · cm^-2,and is not prone to cracking. The soluble solids content is 5% and the sugar-acid ratio is 3. The yield per hectare is approximately 105 000 kg. It is suitable for early spring and autumn-winter protected cultivation in Baotou,Chifeng,Hohhot,Beijing,Tianjin,Baoding and other areas.

Key words: tomato, disease-resistant, multi-resistant, F₁ hybrid