This project belongs to the fields of new varieties of agricultural science crops, biology and medicine technology.
my country's imports of soybeans reached 81.69 million tons in 2015. At present, vegetable soybeans are mainly grown in my country, Southeast Asia and other countries and regions. The area is wide, the planting area is scattered, the climate is diverse, and the geographical conditions are complex. The consumption habits of our people are to prefer varieties with large pods and large grains, but due to the grain size and yield. Negative correlation, there is a lack of new fresh soybean varieties with large pods, large grains and high returns in production; the poor comprehensive disease resistance of the produced varieties and the limitations of variety adaptability have hindered the development of vegetable soybeans. Through aggregation breeding, selection and identification in multiple places, we have innovated the characteristics of Jiao Tong University's 133 vegetable soybeans with large pods and large grains and good commercial properties. At the same time, disease resistance, wide adaptability, high yield and stable yield have been aggregated to become a fresh food in our country. New varieties of spring soybeans with large pods, large grains and high yield and disease resistance. In practice, it has successfully coordinated the contradiction in soybean breeding that it is difficult to balance grain size, yield and wide adaptability, and broke through the difficulty of simultaneous improvement of grain size and disease resistance, high yield, stable yield, and wide adaptability. The main innovations of this achievement are as follows:

1. Crossbreeding with parents with distant geographical origin and good quality to highlight the simultaneous improvement of the commercial nature, taste and yield of vegetable soybean grains. After gene isolation, recombination and breeding, the product has been developed into a high-quality, high-yield variety with large pods and large grains for fresh food spring soybean production in my country.
   Jiaoda 133 was bred by using Taiwan vegetable soybean Tai88 as female parent and Jiaoxuan 2 of Shanghai Jiaotong University as male parent through one round of northern propagation by means of mixed selection. Focus on commercialization during breeding: pod, grain size, coat color, taste evaluation on the day of harvest and yield. Compared with Taiwan 292, the pod width, pod length, pod area, 100-seed weight and pod number per kilogram were increased by more than 10%. The seed coat was green and the taste was sweet and soft. The performance of these quality indicators increased its commodity prices by 16.7 per cent.
2. Through aggregation breeding and selection in multiple places, we will highlight the simultaneous improvement of comprehensive resistance and yield, and select strains with good resistance to two virulent SMV strain lines and good comprehensive resistance.
   In the breeding process, attention is paid to the simultaneous selection of yield and comprehensive resistance, and the identification of disease resistance has been highlighted during years of off-site identification and northern reproduction. 2009-2010 The disease resistance identification by national-level organization in 2001 showed that Jiao Tong University 133 showed moderate and susceptible to the two virulent strains of soybean mosaic virus respectively, and showed basically no disease in the field in production. Compared with Taiwan 292, it showed high susceptibility and the disease was serious in the field. The outstanding performance of the new line is that it has good comprehensive plant characteristics, strong disease resistance and lodging resistance, and no obvious shortcomings.
3. Through the selection of yield traits during the process of identification in other places, the contradiction between grain size and yield and wide adaptability is overcome, and new lines with large grain size and high yield, stable yield and wide adaptability are selected.
   From 2006 to 2008, in the appraisal and final selection in Shanghai, Jiangsu, Yunnan, Zhejiang and other places, high yield, wide adaptability and stability were highlighted. 2009-2010 In 2001, it performed well in 35 test sites across the country. In 2010, he participated in the production test and showed high yield, stable yield, and strong adaptability. All five test sites across the country increased production, and the average yield per mu of fresh pods was 721.7 kg, an increase of 13.5% compared with the control. After stability analysis, the stability performance was good.
   During the period from 2011 to 2015, Jiao Tong University 133 promoted and applied a total of 166,000 acres of planting area in Shanghai, Zhejiang, Yunnan, Heilongjiang, Jiangxi and other provinces and cities, with an added output value of 119 million yuan and an added profit of 106 million yuan. Compared with the control variety in production, the grain weight increased by more than 10%; the yield increased by more than 10%. It accounts for 10% of the area in the main vegetable soybean producing areas, becoming one of the leading varieties in Shanghai City and the main vegetable soybean producing areas in my country.
   After 15 years of hard work, this achievement has broken through the difficulty of selecting important agronomic traits such as vegetable soybean grain commodity, taste, and disease resistance, and simultaneously improving the high yield and wide adaptability of yield. In 2011, it was approved and named by the national government. In 2012, it was awarded the national new variety protection right.