Adzuki bean

**Origin and Diversity of Adzuki Beans:**
– The wild ancestor is likely Vigna angularis var. nipponensis in East Asia.
– Speciation between wild and cultivated varieties occurred around 50,000 years ago.
– Domestication estimated around 3000 BC with cultivated beans having specific traits.
– Multiple domestication origins suggested in East Asia.
– Archaeological perspectives on adzuki origins.

**Breeding and Cultivation of Adzuki Beans:**
– Adzuki beans were early subjects of scientific plant breeding in Japan.
– Important breeding traits include yield, bean color purity, and maturing time.
– Separate cultivars for fodder production and green manure.
– Locally adapted cultivars in China, Japan, Korea, and Taiwan.
– Large germplasm collections in China and Japan.
– Cultivation in China, Japan, South Korea, and Taiwan with varying practices.
– Optimal growth temperature range and soil preferences for adzuki beans.

**Weed Forms and Botany of Adzuki Beans:**
– Weed forms common in Japan due to human-disturbed habitats.
– Consumption of weed forms as sweet beans in some regions.
– Weed forms considered contamination in cultivated gardens.
– Botanical characteristics of adzuki beans – annual plants with taproot systems and trifoliate leaves.
– Flower and pod descriptions of adzuki beans.

**Nutritional Information and Culinary Uses of Adzuki Beans:**
– Nutritional breakdown of cooked adzuki beans.
– Common culinary uses in East Asian cuisine.
– Making red bean paste and inclusion in various dishes.
– Sprouting and boiling for tea-like drinks.
– Traditional Japanese dishes using adzuki beans.

**Research, Studies, and External Resources on Adzuki Beans:**
– Studies on domestication, genetics, and crop rates.
– Draft sequence of adzuki bean genome.
– Contrasting patterns in crop domestication.
– External resources like Wikimedia Commons, research journals, and databases related to adzuki beans.