Chlorophyll and carbohydrates in Arachis pintoi plants under influence of water regimes and nitrogen fertilization

Revista Brasileira de Zootecnia

Rita Manuele Porto Sales²  Daniela Deitos Fries¹  Aureliano José Vieira Pires¹  Paulo Bonomo¹  Iasminy Silva Santos¹  Cleide Nascimento Campos¹  Paulo Henrique Rodrigues Brito¹  Mateus Santos Brito¹ 

[1] ,UESB Zootecnia Itapetinga BA ,Brazil

关键词: development;    field capacity;    legume;    starch;    sugars;   

DOI  :  10.1590/S1516-35982013000600002

来源: SciELO

【 摘 要 】

In this experiment the chlorophyll and carbohydrate contents of Arachis pintoi were evaluated to verify if the presence of nitrogen in the soil could contribute to the effectiveness of the establishment of this legume. The design was completely randomized, in a 4 × 4 factorial arrangement, with four N rates (0, 40, 80 and 120 kg ha-1) and four irrigation levels (25, 50, 75 and 100% of field capacity), with four replications. The biochemical evaluations of chlorophylls a and b and total chlorophyll and total soluble sugars, sucrose and starch were performed. The highest contents of chlorophyll a and b and total chlorophyll in leaves were found at the dose of 120 kg ha-1. The water regime of 25% of field capacity was responsible for the lowest content of reducing sugars and total soluble sugars in leaves, stolons and roots. In the roots, the sucrose contents were higher in these conditions, which can be associated with a slight tolerance of the plant to water stress. The water deficiency was responsible for the decrease of reducing sugars and total N in the whole plant and positively influenced the levels of chlorophyll and sugars in the stolon, promoting growth, especially of shoots, at the beginning of establishment.

【 授权许可】

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