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What are the best varieties of stem lettuce?

(1) Nanjing White Peel Fragrance A local variety in Nanjing, Jiangsu Province. The plant has strong growth potential, large leaf clusters, dense internodes per leaf, broad lanceolate leaf blades, light green, sharp apex, and crumpled leaf surface. Stem skin light greenish white, flesh greenish white, good quality, strong flavor, less fiber. Early maturity, resistant to mildew. Yield of about 1250 kilograms per acre. Suitable for fall sowing, spring harvest, do spring lettuce cultivation.

(2) Nanjing Zipi Xiang Local varieties in Nanjing, Jiangsu Province. The plant has strong growth potential, large leaf clusters, dense internodes per leaf, broad leaf blades, lanceolate, lime green, with a purple halo or all purple-red, leaf surface crumpled. The fleshy shoots are short and strong, long ovoid, with greenish stem bark with purple stripes. Flesh greenish white, good quality. Late maturity, resistant to mildew. It is suitable for spring lettuce or fall lettuce cultivation.

(3) Nanjing round leaf white skin incense, also known as duck egg head. Nanjing, Jiangsu Province, local varieties. The plant has strong growth potential, the leaf blade is broad, long obovate, the apex is obtuse round, light green, the leaf surface is slightly wrinkled. Flesh shoots thick and short like duck eggs, stem skin and flesh color are green and white, the young stem began to expand earlier, not cracked, high yield, good quality. Drawing shoots is about 10 days later than round leaf purple skin incense.

(4) Shanghai large pointed leaves The plant leaf cluster is large, the leaf blade is wide, broad lanceolate, light green, the leaf margin is undulate, the leaf surface is wrinkled, and the leaves are many and dense. Flesh shoots fat, stem skin white-green, flesh color light green. High yield, late draw, late maturity.

(5) Shanghai Big Round Leaf The plant has large leaf clusters, with a plant height of about 45 centimeters and a spread of about 28 centimeters. Leaf blade is broad, long obovate, light green, dense internodes, leaf surface is more wrinkled. The fleshy shoots are thick, 24 centimeters long and 5 centimeters thick, with a single shoot weighing about 350 grams. Thick skin, stem skin white-green, flesh green-white, good quality, more water, crisp and juicy. Medium-late maturity, late shooting, suitable for fall sowing and overwintering, spring harvest.

(6) Chengdu hanging red, also known as the foreign stick pot bamboo shoots. Chengdu City, Sichuan Province, local varieties. Plant growth potential is strong, compact leaf cluster, plant height of about 53 centimeters. Leaf blade long obovate, tip oval, green, heart leaf edge reddish, leaf surface with folds, leaf margin undulate. The stem bark is green with purplish-red patches on the petiole insertion, and the single shoot weighs about 500 grams. The flesh is green and crispy. Early flower bud differentiation in spring, early shoots, early maturity. Weak resistance to mildew.

(7) Chengdu two white skin Chengdu City, Sichuan Province, local varieties. Plant height 45 to 50 centimeters. Plant leaf clusters small, leaf blade erect, inverted ovoid, tip obtuse pointed, base broad flat, light green, leaf margins microwave-like, leaf surface slightly wrinkled, the internodes of the leaf blade has two types of sparse and dense, sparse called two white skin sparse nodes Ba, dense called two white skin dense nodes Ba. Flesh shoots long conical, bamboo shoots thick skin thin, stem skin green and white, flesh light green, brittle, good quality. Heat-resistant, not easy to shoot, suitable for summer open field cultivation, but also suitable for other seasonal cultivation.

(8) Kexing No. 1 Cold-resistant lettuce varieties developed by Sichuan Mianyang Kexing Brand Vegetable Development Co. Cold hardiness is particularly strong, and the fleshy stems expand faster at low temperatures. Leaves are obovoid, green in color, thick and sparse. The fleshy stems are thick, the skin is crispy, the stem flesh is green, the flavor is sweet and crispy, and the commerciality is excellent. The single plant weighs 1.3 to 1.6 kilograms, with a yield of up to 5,000 kilograms per acre.

(9) Kexing No. 4 Cold-resistant lettuce varieties developed by Sichuan Mianyang Kexing Brand Vegetable Development Co. Cold hardiness is particularly strong, and the fleshy stems expand faster at low temperatures, with good disease resistance. Leaves are large lanceolate (pointed leaves), thick and bright green. The fleshy stems are thick, with thin skin and thick flesh, sweet and crispy, with excellent commercialization. Fertilizer and water management is appropriate, the weight of a single plant can reach 1.5 ~ 1.8 kg, the yield of more than 5500 kg per mu.

(10) Carp shoots Beijing local varieties. The plant is short, about 30 centimeters tall and about 45 centimeters wide. Leaf blade long obovate, light green, leaf surface more wrinkled, slightly white powder. The shape of the fleshy shoots is slightly thicker in the middle and lower part, tapering at both ends, resembling crucian carp, with a length of 16-20 centimeters, a transverse diameter of 4-5 centimeters, and a single shoot weight of about 250 grams. The stem bark is light greenish white and thinner. Less fiber, light green flesh, crisp texture, moisture, good quality. Cold-resistant, heat-resistant, early maturity, about 50 days from planting to harvest, yield 1500 to 2000 kg per mu. Suitable for early spring protected cultivation.

(11) Willow leaf lettuce, also known as pointed leaf lettuce, Beijing local varieties. The plant has strong growth potential, with a height of 40-60 centimeters and a spread of about 45 centimeters. The leaf blade is more erect, lanceolate like willow leaf, yellowish green, slightly wrinkled, slightly white powder, the back of the leaf is more wax powder, short internode, leaf edge shallow wave-like. Flesh shoots long stick-shaped, the upper end of the thin, 30 to 35 cm long, cross diameter 5 to 6 cm, single shoots weighing about 500 grams. Stem skin has white, green two kinds, green skin species slightly larger, thick skin, fiber; meat light green, crisp texture, moisture, good quality, raw, cooked food can be, and can be processed pickling. Cold hardy, medium-late maturity, spring planting is not easy to shoot, from planting to harvest 60 to 65 days, the yield of 2500 to 3000 kg per acre. Suitable for spring and fall open field cultivation.

(12) Yan Ling shoots Beijing local varieties. Plant growth potential is strong, plant height 60 cm, 40 cm development. The leaf blade is lanceolate, pointed at the upper end, light green, with crinkled leaf surface and short leaf internodes. The fleshy shoots are pike-shaped, 22 to 25 centimeters long, with a transverse diameter of about 5.5 centimeters, and a single shoot weighing 400 to 600 grams. Stem skin green and white, thin skin, less fiber. Flesh yellow-green, crisp, sweet flavor, moisture, good quality. Cold-resistant, heat-resistant, disease-resistant, medium maturity, 75 to 80 days from planting to harvest. Yield 2500-3000 kilograms per acre. Suitable for spring and fall open field cultivation.

(13) Hefei pointed leaf duck egg shoots Hefei City, Anhui Province, local varieties. Plant growth potential is strong, plant height 40 ~ 45 cm, development degree 50 ~ 55 cm. The whole plant leaf blade more, lance-shaped, green or purple, the upper half of the smooth, the lower half of the slightly wrinkled, apex pointed, leaf edge with shallow notch. Flesh shoots long ovate, 40 ~ 42 cm long, the middle and lower part of the expansion, shaped like a duck's egg, the widest transverse diameter of 8 ~ 10 cm, stem skin green and white, flesh light green, fleshy stems fully expanded, the middle and upper part of the thickening, shaped like a mallet, a single bamboo shoots weighing 500 ~ 750 g. The plant has a thin skin, dense flesh, green or purple, slightly folded upper half, apex pointed, leaf margins have shallow notch. Thin skin, dense and tender flesh, good quality. Early maturity, high yield, heat-resistant, cold-resistant, late shooting. Spring cultivation of 1500 to 2000 kg per mu, fall cultivation of 2500 to 3000 kg per mu.

There are also some local varieties, such as Hunan gong hammer lettuce, Yunnan bitter horse leaf lettuce, Lanzhou pointed leaf chicken leg shoots, Tongguan iron rod lettuce, Inner Mongolia fish maw lettuce and so on.