番茄早熟新品种──“农大早红”的选育

“农大早红”是以早粉２号作母本，沈农２号作父本，通过有性杂交、基因重组，优良性状互补，育成的高产、优质番茄早熟新品种。该品种植株长势中等，第１花序着生第６至第７位，花序间隔１～２片叶，三穗果封顶，属矮自封顶类型．耐寒力较强，座果率高，物候期早，果实发育快，定植后５２ｄ始收，比双亲提早４～６ｄ，前期产量超标２２．８％，总产量超标２６．９％果实近园形，红色，平均单果重１１９．２ｇ，果实酸甜适度，风味好，果皮略厚，不裂果，可溶性固形物含量４．５％～５％．适于日光温室，大、中、小棚覆盖和露地早熟栽培，单干整枝，９株／ｍ￣２以上，常年产量为５．２～６．０ｋｇ／ｍ￣２．

Selection of Early──Maturing Tomato Variety──Nongda Zaohong

Nongda Zaohong is a newly-developed variety of early-maturing tomato wifh high yield,fine quatity through the hybrid combonation of zaohong- 2 x shennong-2. The first inflorescence locates at sixth or seventh joint place of the plant,with 1-2 leaves between inflotsecences.The top bud of the plant stops growing spontaneously when it bears three ears of fruit,and the variety belongs to a type of short stalk and top bud stoping growing naturally.Besides the above specific features, the variety has also some other advantages as ollows:1. strong cold- resistance, early phenological date, high rate of fructification,and rapid development of fruit which matures at about 52th day after field planting,4-6 days earlier than its parents;2the mean single,fruit weight deing 119.2g, with per mu yield 3500-4000 kilograms, total output increasing by 26.9% compaired with that of contrist variety;3.red and nearly round fruit,thicker peal without cracks,and acid -sweet of the fruit aqreeable to the taste with an amount of 4 4. 5% soluble solid substance; 4.the variety suited for cultivation in big shed covered with plastic film and in field, reduiring 9 plants per square metre with pruning of single stalk.