Biochemical traits useful for the determination of genetic variation in a natural population of Myracrodruon urundeuva

Pesquisa Agropecuária Brasileira

Mario Luiz Teixeira de Moraes¹  Marco Eustáquio de Sá¹  Carem Gledes Vargas Rechia²  Jarbas Francisco Giorgini²  Ludmila Abdala²  Maria de Lourdes Teixeira de Moraes Polizeli² 

[1] Universidade Estadual Paulista;Universidade de São Paulo;

关键词: Myracrodruon urundeuva;    seed;    proteins;    lipids;    carbohydrates;    evaluation;   

DOI  :  10.1590/S0100-204X2002000700003

来源: DOAJ

【 摘 要 】

The objectives of this work were to analyze seeds from 20 trees of aroeira (Myracrodruon urundeuva Fr. All.) of a natural population located in the region of Selvíria, State of Mato Grosso do Sul, Brazil, in order to evaluate their protein, lipid and carbohydrate contents, and to estimate their genetic variation. A completely randomized experimental design consisting of 20 treatments (families) was set up, with two replications. Four types of proteins were detected: albumin (35.0 to 107.3 mg/g seed), globulin (3.4 to 9.3 mg/g), prolamin (60.0 to 135.2 mg/g) and glutelin (118.0 to 286.0 mg/g). The lipid content varied between 200 and 334 mg/g seed. The total sugars also varied (26.5 to 46.3 mg/g seed), with a predominance of polyols (arabinitol, mannitol, glucitol and xylitol). The main monosaccharides detected were glucose and arabinose. Total hydrolysis of the sugars indicated the presence of neutral arabinan and xylan oligosaccharides. The starch content varied from 0.35 to 1.58 mg/g seed. These biochemical traits showed considerable genetic variability, indicating that only the collection of seeds from many different trees can provide a representative sample of the population for conservation and genetic improvement.

【 授权许可】

Unknown