Abstract:

To find out the relationship between the germination yield and biological traits and create more suitable materials for peanut sprout industrialization, this study conducted character statistics and germination experiments on nationwide peanut materials with different genetic backgrounds. A total of 127 peanut materials with different genetic backgrounds, including four testa color materials from five regions of China, were selected to measure the 100-kernel weight, plant height and yield per plant after planting. After 8 days of germination in plant factory, the sprout height, weight coefficient and sprout output coefficient were calculated and compared. The results showed that the 127 peanut materials with different genetic backgrounds had significant differences of 7.75 cm at maximum in sprout height. The sprout height of most varieties was 12-13 cm, accounting for 26.77% of total samples. The extreme value of sprout weight coefficient had a significant difference of 7.85 times, and the average sprout weight coefficient was 4.62. The highest sprout output coefficient detected was 8.24 in YY40 ordinary peanut. The materials with sprout output coefficient above 7 displayed yield ratio greater than 1, accounting for 4.72% of the total. According to the sprout output coefficient analysis with different colors, regions and 100-kernel weight, we found that color and region had no significant effect on the sprout output coefficient. The sprout output coefficient decreased gradually with the increase of the 100-kernel weight, but there was a great difference among peanut varieties with different genetic backgrounds. However, high coefficient of sprout weight and output were still observed in high 100-kernel weight varieties, and vice versa.

Key words: peanut, plant factory, peanut sprout, sprout weight coefficient, output coefficient