Background: Small white Kidney beans (Phaseolus vulgaris L.) is popular in the international market, they are widely cultivated in the high and cold areas of China. However, these areas have relatively short growth period, resulting in the low yield and quality of kidney beans, which limits the development of kidney bean. Keyun1 has since played an important role in improving kidney bean production in the country since 2020 because of its high yields, good upright, and wide adaptability. Methods: Keyun1 is a small grain white kidney bean cultivar that was developed systematic selection of excellent mutants in China in 2020. Result: The average yield of Keyun1 was 2346.26 kg per hectare, 34.42% higher than that of the control cultivar (The British Red) in the national joint identification test of new kidney bean cultivars of China from 2016 to 2017. In 2018, Keyun1 was included in the national joint identification and production test of new kidney bean cultivars of China, the average yield per hectare was 2076.58 kg, which is 67.99% higher than that of the control cultivar(The British Red). and exploration of nitrogen application and planting density showed the best nitrogen application is 45 kg of active ingredient nitrogen per hectare and the best planting density is 15×104 - 20×104 plants/ha, the greatest yield was 3198.17 kg/ha.

To improve the storage quality of adzuki bean paste from starch aging, the effects of glycolipid addition on the properties of gelatinization and retrogradation properties of adzuki flour obtained by the retrogradation inside adzuki bean during storage and transportation are investigated. The results indicate the significant differences in the gelatinization and the distribution of starch granules for different varieties of beans. The higher gelatinization temperature of adzuki flour results in the lower enthalpy of gelatinization with an undulating tendency of the retrogradation due to the short-term aging of amylose and long-term aging of amylopectin within adzuki flour. In the early stage of aging, the coexistence of protein, fat, and starch inside adzuki flour hinder the aging of starch. An Avrami equation is introduced to characterize the aging process of the starch–protein–fat–water system of different varieties of adzuki flours. The nucleation mode of the crystal nucleus has a significant effect on the aging rate of different varieties of adzuki flour. The fat in the system fails to demonstrate a significant effect on the nucleation mode of starch retrogradation. The addition of glycolipids increases the gelatinization enthalpy of adzuki flour. Glycolipids can reduce the aging degree of adzuki flour, and the inhibition effect on the retrogradation of sucrose monoester is greater than that of maltose monoester. The research results provide the valuable guidance for the high-quality processing and storage of adzuki bean paste from starch aging.

Background: Black bean (Phaseolus vulgaris L.) has been widely grown in China and is popular in the international market. However, to decrease production costs, growers require cultivars with an upright growth pattern that enables them to be harvested directly. Longyundou 19, which was developed by the Crop Resources Institute of the Heilongjiang Academy of Agricultural Sciences was released in 2020 as an upright, high-yielding black bean cultivar with resistance to anthracnose and common bacterial blight. Methods: Cross breeding is an effective way of improving common bean varieties. Longyundou 19 was developed from the Longyundou 4 (female) × Longyundou 5 (male) hybridization and the subsequent systematic selection for upright, yield, disease resistance, quality and agronomic traits over six generations. Result: The average yield of Longyundou 19 during yield trials from 2016 to 2019 was 1,888.5 kg ha-1, which was 10.3% greater than that of the check cultivar. Disease investigations conducted in fields from 2016 to 2019, indicated Longyundou 19 exhibits some resistance to anthracnose, common bacterial blight and BCMV. This new variety combined the disease resistance and black seed coat of the female parent with the upright growth pattern of the male parent, while retaining the high yield of both parents.