The fall and winter greenhouse, greenhouse temperature is low, air humidity, light is insufficient, so to choose low temperature and low light resistance, fast growth and high yield in the early stage of the longer reproductive period of the varieties. Now the typical cucumber germplasm with relevant characteristics are introduced as follows.

1. Beijing small thorn

Plant growth potential is medium, the root system is resistant to low temperature, insensitive to low light response, smaller leaves, suitable for dense planting. Early maturity, the main vine in the 3 ~ 4 section began to melon, and then every 1 ~ 3 sections of 1 ~ 2 melons, there are a few plants in every section of the melon, the melon grows fast at low temperatures. Properly managed, there are a lot of returning melons. Melon light green, melon length 25 ~ 33cm, melon handle is shorter, melon spiny tumors less, white thorns, thin skin, thick flesh, melon cavity is small.

2. Changchun Mizhi (small eight branches)

In the protected area of the plant growth potential is very strong, branching medium. The main vine bears melons, strong nodes, easy to bear back melons. The first female flower is born in 3-5 sections of the main vine, the melon shape is long and rod-shaped, the melon strip is straight, the commercial melon diameter is 35-40cm in longitudinal diameter, and the transverse diameter is 3.5cm. the melon is green, the melon handle is thin, and the melon flesh is thicker and white-green. Melon surface has shallow ribs, melon tumors large and dense, melon thorns white, thorns, less wax powder, single melon weight of about 250 g. Early ripening, suitable for protected spring and winter cultivation, due to the long seedling age, generally 50 ~ 60d, from planting to harvesting takes about 20d. The plant is resistant to low and high temperatures.

3. Jin You 31

Strong plant growth potential. Early maturity, high yield, low temperature tolerance, low light. Melon straight, melon handle short, skin color dark green, glossy, dense thorns, tumors, medium, good quality, longitudinal diameter of 33cm, single melon weight of about 180g. Yield of 120000kg/km2 or so, suitable for solarium over-winter stubble and early spring stubble cultivation.

4. New No. 34

Strong plant growth potential, dark green leaves. The main vine is mainly fruitful, early maturity is good, the first female flowers are born in the 4th to 5th section, the female flower node rate of about 40%. Melon stick-shaped, length 28cm or so, single melon weight 150g or so. Melon handle short, melon dark green, dense white thorns, tumor significant, light green flesh, excellent quality, good commercialization. Overwintering cultivation in solar greenhouses, low temperature resistance, low light tolerance, the use of black-seeded pumpkin grafting, the harvest period of up to 180d, the output of up to 120,000kg/km2 or more.

(B) heat-resistant germplasm

1. Zhongnong 118

The generation of hybrids formulated with heat-resistant, high-quality, disease-resistant self-inbred lines 02343 and 273 as the parents. The length of waist melon is about 35cm, the length of melon handle is about 3.5cm, the melon color is deep green, glossy, no yellow stripes, the weight of single melon is about 300g. high resistance to ZYMV, WMV, resistance to downy mildew, powdery mildew, angular spot, moderate resistance to blight, CMV. heat-resistant, high yield, the yield of 75,000kg/km2 or more. Suitable for spring, summer and fall open field cultivation.

2. Jin You No. 4

The heat-resistant cucumber hybrid can develop normally at 34-36℃ in summer. Strong resistance to wilt, mildew, powdery mildew, suitable for spring and fall open field and summer cultivation in North China. Strong plant growth potential, spring open field cultivation yield of up to 75000kg/km2. melon stick-shaped, about 30cm long, single melon weight of 150g. Good commerciality, melon color dark green, glossy; tumor significant, dense white spines; flesh light green, crisp, sweet, excellent quality.

(C) high-quality germplasm

Simon et al. (1997) used the Xishuangbanna cucumber innovation of new high carotene germplasm. Among them, the carotene content of the new germplasm Early Orange Mass 400 and Early Orange Mass 402 is as high as 2.5mg/100g; and that of the new germplasm Late Orange Mass 404 is 1.5mg/100g.