“银糯1号”

     “银糯1号”是北京农学院生物技术系于2000年杂交而成的糯玉米杂交种。经2001年的测交试验，2002~2003年产比试验，2004~2005年北京市区域试验，均比对照“中糯1号”增产30.8%（鲜穗）和20.7%（鲜粒）以上，大面积生产，鲜穗产量达1.08万kg/hm²以上。品尝结果为第一名和第二名。

特征特性:

1、银糯1号春播生育期100d左右，播种至收获青穗约86d；夏播生育期90d左右，播种至收获青穗约80d。

2、全株有18～19片叶，苗期叶鞘稍有紫色，叶片上举绿色，植株筒形，株高268cm左右，穗位高度100～118cm，雌穗穗柄长3cm，有1～2个分枝，苞叶紧而稍短，有1cm左右的秃尖。

3、穗为长锥形，穗轴白色，果穗长度为20～21cm，穗粗4.5～4.8cm，穗行数为14～16行。子粒为银白色，椭圆形，粒深1.0cm，鲜子粒千粒重296g左右，出子率55.9%。空秆率2%左右。

4、银糯1号子粒品质极佳，胚乳中淀粉100%为支链淀粉。粗淀粉65.96%，粗蛋白9.50%，粗脂肪3.54%，赖氨酸0.29%，总糖10.14%。

5、银糯1号高抗玉米大、小斑病，对矮花叶病、青枯病、弯孢菌叶斑病、褐斑病、粗缩病、丝黑穗病也有很好的抗性，轻感黑粉病不抗玉米螟虫。有较好的抗寒抗旱及抗倒伏性。

栽培要点及适应范围

该品种大面积种植净鲜穗产量可达1万kg/hm²以上，鲜粒产量可达8 700kg/hm²以上。种植密度以49 000～50 000株/hm²为宜。用种量37.5kg/hm²。该品种需肥量较大，大喇叭口时期要注意防治玉米螟。授粉后22~23d收获青穗为宜。该品种适于在东北、华北、西北等地种植。

Yinnuo No. 1

 ‘Yinnuo No. 1’ is a trading name of a hybrid glutinous corn which was successfully hybridized in 2000 by College of Biotechnology, Beijing University of Agriculture. Based on the test cross test in 2001, yield compare test in 2002~2003, and regional trials in 2004~2005, ‘Yinnuo No. 1’ demonstrated a 30.8% yield increase of fresh ears and a 20.7% yield increase of fresh seeds comparing with another corn ‘Zhongnuo No. 1’. The yield of fresh ears can reach 10 800 kg/hm². It tastes very well.

Characteristics:

1. When spring sowing, ‘Yinnuo No. 1’ needs a growth period about 100 d. It is about 86 d from sowing to green ear period. While in summer sowing, it needs a growth period about 90 d, and about 80 d from sowing to green ear period.

2. There are about 18~19 leaves in the whole plant. In the seedling stage, the leaf sheaths are slightly purple, and the leaves are green and upward. The whole plants are cylindrical and about 268 cm high. Ear heights are 100~118 cm. Shanks of female ear are about 3 cm, 1~2 branches, tight and slightly short bracts, and a steeple about 1 cm.

3. Ears are long conical, white, 20~21 cm long, 4.5~4.8 wide, and 14~16 row. The seeds are silvery white, oval, 1.0 cm high, about 296 g/1000 grain. The kernel rate is about 55.9%, and the bareplant rate is about 2%.

4. The seed is high quality. 100% amylum in endosperm are amylopectin. The seed composition is: crude amylum 65.96%, crude protein 9.50%, crude fat 3.54%, lysine 0.29%, and total saccharides 10.14%.

5. ‘Yinnuo No. 1’ demonstrates high resistance to plant pathogens Exserohilum turcicum and Cochliobolus heterostrophus, and considerable resistance to maize dwarf mosaic, Ralstonia solanacearum, Curvularia lunata, Psoderma maydis, maize rough dearf virus, and Sphacelotheca reiliana, but low sensitive to Ustilago maydis. It is sensitive to Pyrausta nubilalis, but manifests cold-resistance, drought-resistance, and lodging resistance activities.

Cultivation points:

Fresh ear yield for large-scale production reaches over 10 000 kg/hm², and 8700 kg/hm² of fresh seeds. The optimal planting density is 49 000～50 000 grain/hm², about 37.5 kg/hm². ‘Yinnuo No. 1’ needs a little more fertilizer, and Pyrausta nubilalis defense in the big horn stage. 22~23 d after pollination is the optimal time for green ear gaining. ‘Yinnuo No. 1’ is suitable to plant in Northeast, North, and Northwest of China.