Buckwheat Seed Shelling Characters: A Review

doi:10.11924/j.issn.1000-6850.casb2022-0077

Abstract

Abstract:

Buckwheat has a wide range of adaptation and rich germplasm, and it is a medicinal and food crop. Its seeds have a high nutritional value. Buckwheat seeds are composed of embryos, endosperm and hulls. The hull is rich in lignin, cellulose and sugar, which makes it difficult to shell. This trait seriously restricts the development of the buckwheat processing industry. Therefore, cultivating germplasm resources which are easy to shell is one of the main objectives of buckwheat breeding. The formation and dehiscence of buckwheat hulls are regulated by both genetic and environmental factors. In order to fully understand the factors affecting buckwheat hull dehiscence, this study summarized the composition and cellular arrangement of different buckwheat hulls, generalized the function of enzymes in the process of seed hull dehiscence and the function of the waxy cuticle in the process of seed hull shedding, and analyzed the regulation of transcription factors on hull development. It also pointed out the main differences and relative key candidate genes in hull development and hull dehiscence traits between thin and thick hulled buckwheat seeds, which could provide an important theoretical basis for the cloning of key regulatory genes for dehiscence and efficient molecular design breeding.

Key words: buckwheat, seed shelling, cell wall degrading enzymes, cuticle, transcription factor

CLC Number:

S567.9

MA Guifang, XIN Haibo, XIU Li, SUN Chaoxia, ZHANG Hua. Buckwheat Seed Shelling Characters: A Review[J]. Chinese Agricultural Science Bulletin, 2022, 38(24): 19-27.

Figures/Tables 8

References 89

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成分	含量/%
水分	11.3
蛋白质	4.3
其他	2.0
木质素	8.7
脂肪	2.6
黄酮类化合物	1.6~1.7
纤维素类	40
单糖	5.5

成分	含量/%
水分	11.3
蛋白质	4.3
其他	2.0
木质素	8.7
脂肪	2.6
黄酮类化合物	1.6~1.7
纤维素类	40
单糖	5.5