Rapeseed boron deficiency performance

When boron is deficient in rapeseed, its roots, stems, leaves, flowers, buds, and fruits are not able to grow normally. In particular, it is thought that the "yoke" appears due to the degradation of floral organs, which leads to the formation of flowers, which leads to a significant reduction in rapeseed yield. . Brassica napus deficiency can show symptoms at all stages of development, with the most obvious seedling stage, bud stage and flowering stage.

The seedling root system is stunted, the growth is slow, and the fibrous roots are less; the root tip has a small nodule; the root neck enlarges, the severe epidermis turns brown, the cortex is cracked or even necrotic, and it is easy to die. After the transplanting, the rapeseed is slow in growth, new leaves are not long, the leaves are deformed, small and hypertrophy, the leaf margin is reeled and shrunk, the veins turn green and turn yellow, the leaf color is dark green and matte, and the leaf edge turns purple or purple in the entire leaf. .

The buds rhizomes inflated, the roots appear hollow, and the root epidermis is brownish-brown. The leaves are thick and fragile, the leaf margins are rewinded, the foliage is uplifted, uneven, and the leaves fade into blue and purple spots. The growth of stolons is not normal, the pods are short, the plants are dwarfed and even withered.

The symptoms of roots and leaves in the flowering period are the same as before. The main inflorescence grows slowly, dwarfs, and the apical atrophy. Flowering is late, no obvious flowering period. Floral devices are degraded, pollen is not normally developed, flowers are formed, and it is impossible to form pods normally.

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