Japonica indica 89 (rice)

Japonica Indica 89 is a high quality rice variety bred by the cross between japonica rice and indica rice and IR36 in Foshan City, Guangdong Province. Participated in the regional trial in Guangdong Province from 1990 to 1991, the average yield per mu was 408.2-416.2kg, which was 9.07% higher than that of Qishanzhan control variety by 16.55%. At the beginning of 1992, it was approved by Guangdong crop Variety approval Committee and became a popularized variety in the whole province.

The rice quality of this variety is good, the protein content is high, tested by the Rice quality Supervision and testing Center of the Ministry of Agriculture, the brown rice rate is 78.9%, the milled rice rate is 71.3%, the head rice rate is 59.5%, the grain length 6.0mm, the ratio of length to width is 2.9%, the chalkiness rate is 9%, the chalkiness degree is 1.93%, and the transparency grade is all up to the alkali elimination value class 6.1, gel consistency 89mm and amylose content of the high quality rice standard issued by the Ministry. The protein content is 9.53%. The appearance of rice in Guangdong Grain and Oil products quality Supervision and Inspection Station is classified as Grade I in early production and Grade II in late production. The rice is white, soft and delicious, and it tastes good.

Japonica indica 89 is a temperature-sensitive variety, which can be used both in the morning and in the evening. The whole growth period is mainly restricted by the change of temperature. The whole growth period is about 135 days in the central part of the province, and it is not suitable for large-scale planting in the rice growing area of northern Guangdong. The whole growth period in the central region of late construction is about 110 days.

Japonica indica 89 plants have a height of 98.5-97.3cm, medium tillering ability, stout stalks and good ripe color. This variety belongs to large panicle type, with large ratio of grain to stalk and good yield. The average effective panicle per mu is 200000, the panicle length is 20cm, the total number of grains per panicle is 120.8-156.0, of which the number of filled grains is 101.6-129.8, the seed setting rate is 83.2% Mel 84.1%, the 1000-grain weight is 19.7-19.8 g, and the average yield per mu is 408.2-416.2kg.

The variety has strong resistance to disease and insect pests, and the resistance frequency to rice blast is 87.5% in group B, 83.3% in group C and 87.5% in the whole population; it is resistant to bacterial leaf blight and is moderately resistant to brown planthopper.

Japonica number 89 is a good rice variety with stable yield, strong adaptability and good rice quality. Because it belongs to intersubspecific distant hybrid varieties, there will be more or less separation, so we should pay attention to removing impurities during seed propagation and maintain the relative stability and purity of the varieties.