Fuyou 964 (rice)

Fuyou 964 is a new combination made of Fuyi A and Fuhui 964 by Rice and Wheat Research Institute of Fujian Province Academy of Agricultural Sciences. In 1997~1998, he participated in the regional test of hybrid late indica rice in Fujian Province, and in 1999, he participated in the production test in Fujian Province.

Fuhui 964 is a new restorer line bred from the cross between Guawadao22, which has strong restoring ability to CMS line, and Minghui 63, a strong restoring line. Plant height is higher, plant type is slightly scattered, tillering ability is stronger, stem is thick and tough, leaf color is dark green, flag leaf tile shape is longer, panicle is large and grain is more, pollen quantity is large, seed setting rate is high, 1000-grain weight is small, and color conversion is good in late stage. Milled rice in early season is milky white, and polished rice in late season is transparent and rarely chalky. The seed has the characteristic of slow germination speed of japonica rice. The green period of early season sowing was longer, and the growth period was shortened gradually with the postponement of sowing date. From March 15 to July 21, 1999, the seeds were sown in Fuzhou in ten stages, and the initial sowing days varied from 80 to 128 days. Fuhui 964 belongs to the basic vegetative growth type promoted by high temperature and short day, and has certain compatibility to stem rice.

[Characteristics] Long leaves, dark green leaves, strong tillering ability, high panicle rate. Early growth and rapid development in early stage; moderate plant type distribution in middle and late stage, thick and tough stem; ideal distribution of 3 leaves in canopy layer in late stage, good light transmittance, low temperature tolerance, high seed setting rate and good color transformation. Under medium fertilizer condition, the leaves of main stem were 15~16 leaves, the flag leaves were 38~45cm long and 2.0~ 2.2 cm wide, erect and had long functional period. The plant height was about 100 cm, the panicle length was 24~25cm, the effective panicle was about 2.7 million/hm2, the total grains per panicle was about 160, the seed setting rate was 85%, and the 1000-grain weight was 25g.

The resistance to rice blast was identified at 10 sites in the provincial rice regional test from 1997 to 1998, and the leaf blast and panicle neck blast were all 0~3 grades. In the late season test in 1999, it also showed resistance to sheath blight, fine stripe disease and rice gall midge.

The results showed that brown rice rate 80.4%, milled rice rate 73.2%, head milled rice rate 70.0%, grain length 6.2 m, length/width ratio 2.4, chalkiness rate 40%, chalkiness degree 4.0%, transparency grade 1, alkali elimination grade 3.9, gel consistency 51mm, amylose content 22.0%, protein content 9.5%. Among them, 5 indexes reached the first grade standard of high quality rice issued by the Ministry, and 4 indexes reached the second grade standard of high quality rice issued by the Ministry. Rice appearance quality is good, rice is soft and delicious, food quality is better than Shanyou 63.

The total growth period of late indica rice in 1997 ~1998 was 129.0 d and 123.4 d respectively, which was 1.0 d and 25d shorter than that of Shanyou 63. As late rice, it was 2 days earlier than Shanyou 63. As middle rice, it had the same growth period as Shanyou 63. As early rice, it was 8 days longer than Shanyou 63.

Fuyou 964 was tested in Fujian Province in 1997. The average yield of Fuyou 964 was 6.08 t/hm2, 13.65% and 11.88% higher than Shanyou Gui 32(CK1) and Shanyou 63(CK2) respectively. In 1998, the average yield was 7.01 t/hm2, 4.22% and 2.14% higher than Shanyougui 32 and Shanyou 63 respectively.

In the late season of 1997, 0.13 hm ~ 2 was planted in Jian 'ou City with an average yield of 7.43 t/hm ~ 2, 14.7% higher than Shanyou 63, and 0.1 hm ~ 2 was planted in Xiamen City with an average yield of 7.26 t/hm ~ 2, 4.18% higher than Biyou 63. In the late season of 1998, 0.3 hm ~ 2 was planted in Shaowu City, with an average yield of 7.88 t/hm ~ 2, which was 3.69% higher than that of Shanyou 63. In Ninghua County, the average yield was 7.07 t/hm2, which was 12.1% higher than that of Shanyou 63. In the late season of 1999, O. 1 hm 2 was planted in Shanghang County. The average yield was 7.31 t/hm2, 8.0% higher than that of Shanyou 63.

[Breeder] Rice and Wheat Research of Fujian Province Academy of Agricultural Sciences

[Region and technology] Fuyou 964 has large panicles and many grains. In cultivation, it should focus on effective panicles, create reasonable high-yield population structure and increase grain weight. Advocate to use strong chlorine essence to soak seed, abluent adequately again germinate, in order to prevent bakanae disease. Sowing in late June, or 2~ 3 days later than Shanyou 63, with more than 2 tillers and strong seedlings, seedling age controlled within 30 days. Proper density planting, planting specification 16cm×20cm, planting more than 300 thousand holes per hectare, planting 2 grains per hole. Fertilization measures such as promoting early growth in early stage, strengthening plants and culms in middle stage and supplementing fertilizer for grain filling and weight gain in late stage were adopted. The total amount of pure nitrogen was 150 kg/hm2, and the ratio of N, P and K was 1.0:0.5:0.7. 50% base fertilizer, 30% tillering fertilizer and 20% grain gain fertilizer. 3 days before harvest, keep wet, not too early water shortage, so that the fertilized seeds are full and plump. Pay attention to the control of rice thrips, borers, rice planthoppers and other diseases and insect pests during field growth.

It is safe and reliable to determine the difference of parent sowing time by time difference and leaf age difference. The seed production time difference of middle rice is 32~49 days and leaf difference is 6.5~8.5 leaves, while that of late rice is 24~26 days and leaf difference is 5.8~6.3 leaves. Comprehensive measures were taken to improve outcrossing rate and seed quality. Fuyi A was insensitive to "920," and its dosage should be increased by 75~90g/hm ~ 2 compared with Zhenshan 97A."920" should be sprayed at 20%~25% heading stage of female parent and repeated every 2 days, 120~135g/hm ~ 2. Foy A was susceptible to sheath blight, especially from heading stage to grain filling stage. Fuyi A itself blooms early, spikelet opening angle is big, stigma is developed, exsertion rate is high, vigor is strong, some seeds have glume cracking phenomenon, so it is not suitable to spray regulators such as Duowei Ling. During flowering and fruiting period, irrigate shallow water layer, keep field humidity, make seeds less or no glume crack, ensure seed quality.