Jiangsu seed Industry will promote improved Rice varieties tomorrow

Nanjing 44, formerly known as "Ning 4009", is an early-maturing late japonica rice variety. It was selected by the Food crops Research Institute of Jiangsu Academy of Agricultural Sciences and bred in 2004. It is suitable for planting under the conditions of middle and high fertility along the Yangtze River and southern Jiangsu Province. Participated in the regional trial of Jiangsu Province from 2005 to 2006, the average yield per mu was 588.1 kg in two years, and the average yield per mu in the production test in 2006 was 621.9 kg, which was 7.1% higher than that of the control. The effective panicle is about 190000 per mu, the number of filled grains per panicle is about 130, the seed setting rate is about 90%, and the 1000-grain weight is about 25 grams. The plant height is about 100 cm and the whole growth period is about 158 days. The plant type is compact, the growth is prosperous, the panicle type is medium, the tillering ability is strong, the leaf color is light green, the population uniformity is good, the late mature color is good, the lodging resistance is strong. The results of field planting identification from 2005 to 2006 showed resistance to stripe leaf blight. The quality was tested by the Food quality Inspection Center of the Ministry of Agriculture in 2006, the rate of head rice was 62.0%, the rate of chalky grain was 28.0%, the degree of chalkiness was 2.2%, the gel consistency was 78.0 mm, the content of amylose was 15.5%, and the physicochemical index of rice quality reached the national third-grade high-quality rice standard. good palatability.

Xudao No. 4 is a new japonica rice variety with good quality, high yield, high resistance and middle japonica rice bred by Xuzhou Institute of Agricultural Sciences in Jiangsu Province. It was approved by Shandong Province in March 2004. It passed the examination and approval of introduction in Jiangsu Province in 2006. Has obtained the national new plant variety protection right, the authorization announcement is: CAN001205G. The variety has a full growth period of 145 to 155 days, a plant height of 95 cm, moderate plant type distribution, good stem elasticity, strong fertilizer resistance and lodging resistance, dark leaf color, clean and jerk of flag leaves, neat growth and strong tillering ability. The panicle rate is high, generally 200000 ~ 220000 per mu, the total number of grains per panicle is about 130grains, the seed setting rate is more than 90%, the 1000-grain weight is 26g, the color is good in the later stage, the grain is full, and the ripening phase is good. Tested by the Rice and products testing Center of the Ministry of Agriculture in 2003, the rate of brown rice was 85.1% and the protein content was 9.2%. Among the 12 physical and chemical indexes, 9 reached the first-class rice standard and 1 reached the second-class rice standard. The quality of the rice is good, the taste and taste are good. The resistance was identified by China Rice Institute: medium resistance to seedling blast, resistance to panicle neck, bacterial leaf blight and mild sheath blight. Large area planting showed high resistance to stripe leaf blight.

Lianjing 4 is a new medium-maturing and medium-japonica rice strain. After more than two years of continuous experiments, Lianjing 4 has shown high yield, stable yield, excellent rice quality and good resistance, especially high resistance to stripe blight. It has applied for national protection of new agricultural plant varieties, which will be permanently exclusive by Jiangsu tomorrow seed industry. The whole growth period of this strain in Huaibei area is about 155days, 3 days later than Zhendao 88, plant height is about 100cm, plant type is moderate, leaf posture is tall, population uniformity is good, color transformation is good, tillering ability is strong, panicle rate is high, effective panicle per mu is 220000, total grains per panicle is 123.7, seed setting rate is about 90%, 1000-grain weight is 26g, lodging resistance is strong. The roughness rate is 82.5%, the chalkiness rate is 12.5%, the chalkiness degree is 0.4%, the gel consistency is 85%, and the rice quality is excellent. Resistant to stripe blight, bacterial blight and sheath blight. In 2003, the average yield per mu was 658kg, and the high-yield field reached 702kg, which was 6.3% higher than that of the control Zaofengjiu. In 2004, we participated in the provincial mid-maturity and medium-japonica pre-test, and the average yield per mu was 670.5 kg, 3.82% higher than that of the control Zhendao 88.