What are the three-line rice varieties?

The breeding of three-line rice can be said to be the real beginning of the utilization of rice heterosis in China. as early as 1973, Yuan Longping's team cultivated a strong heterosis combination "Nanyou 2". At the same time, China's wild abortive indica hybrid rice "three lines" completed the matching, and selected a number of strong heterosis combinations, which led to the second revolution of rice breeding and production in China. So what are the three-line rice varieties? Let's get to know it.

1. Indica Youduo No. 1

The variety Indica Youduo No. 1 has a full growth period of 145156days, an effective panicle of 15-180000 / mu, a seed setting rate of 88.7%, a good taste, high resistance to rice blast, cold tolerance at seedling stage, vigorous growth, good late ripening color, not early senescence and strong regeneration. Participated in the national indica hybrid rice regional trial in 1993 and 1994, with a yield of 8396 kg per hectare and 9056 kg per hectare respectively, 4.3% and 3.5% higher than that of Indica you 63. Since then, it began to be fully promoted in the southwest region, when the planting area reached more than 1900 million mu.

2. Wuyou 308

Wuyou 308 is a late indica early maturing hybrid rice variety with the most extensive planting area in China. The average growth period was 112.2 days, which was 1.7 days longer than that of Jinyou 207. the plant height was 99.6cm, the ear length was 21.7cm, the total grains per panicle was 157.3, the seed setting rate was 73.3%, and the 1000-grain weight was 23.6g. Wuyou 308 participated in the regional trial of early-maturing and late indica varieties in the middle and lower reaches of the Yangtze River in 2006. the average yield per mu was 512.0 kg, which was 9.48% higher than that of Jinyou 207. It can be said that the output performance at that time was extremely remarkable.

3. Shanyou 63

Shanyou 63 can be said to be the star of hybrid rice, which can resist serious rice blast, which is the killer mace of "Shanyou 63" and solves the fatal defect of poor blast resistance of the first generation hybrid rice. And excellent quality, strong adaptability and so on set many advantages in one. In 1986, "Shanyou 63" became the variety with the largest sown area of hybrid rice in China, and ranked first continuously for the following 16 years.

4. Tianyou Huazhan

Tianyou Huazhan has been popularized for ten years, no matter high temperature, low temperature, disaster year or bumper year, Tianyouhuazhan has always maintained outstanding comprehensive performance, and has become the bright pearl of Chinese hybrid rice varieties with its outstanding advantages.

After the test of rice blast in 2008 and 2017, Tianyou Huazhan showed strong resistance to rice blast and became a model of high yield, stable yield and high resistance of rice.

Of course, in addition to the above varieties, the three-line rice also includes 22 varieties, including Shanyou 64, Dyou 63, Gangyou 22, Boyou 64 and so on, and these varieties all reflect the development and planting history of rice in our country.

For the wonderful pictures and articles and popular comments on the three-line rice, you may be interested in the following recommended contents of Nongxun. Welcome to read.

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