Tolerance of precocious dwarf cashew clones to salt stress during rootstock formation stage

被引：7
|
作者：
de Lima, Geovani S. [1 ]
da Silva, Jailson B. [1 ]
Souza, Leandro de P. [2 ]
Nobre, Reginaldo G. [3 ]
Soares, Lauriane A. dos A. [1 ]
Gheyi, Hans R. [2 ]
机构：
[1] Univ Fed Campina Grande, Ctr Ciencias & Tecnol Agroalimentar, Unidade Acad Ciencias Agr, Pombal, PB, Brazil
[2] Univ Fed Campina Grande, Ctr Tecnol & Recursos Nat, Programa Posgrad Engn Agr, Campina Grande, Paraiba, Brazil
[3] Univ Fed Rural Semi Arido, Dept Ciencia & Tecnol, Caraubas, RN, Brazil
来源：
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2020年 / 24卷 / 07期
关键词：
Anacardium occidentale L; water scarcity; saline water; SALINE WATER; PHYSIOLOGY; GROWTH;
D O I：
10.1590/1807-1929/agriambi.v24n7p474-481
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study was conducted to evaluate the tolerance of precocious dwarf cashew clones to irrigation with waters of different salinity levels during rootstock formation. The experimental design consisted of randomized blocks, arranged in a 5 x 3 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.4; 1.2; 2.0; 2.8 and 3.6 dS m(-1)) and three clones of precocious dwarf cashew (Faga 11, Embrapa 51, CCP 76), with three replicates. Water salinity above 0.4 dS m-1 inhibited chlorophyll synthesis and growth, but led to cashew seedlings with the Dickson Quality Index (DQI) higher than the acceptable limit. Based on the relative yield of the total dry mass, the clones Faga 11, Embrapa 51 and CCP 76, at the highest salinity level studied, were classified as moderately sensitive, sensitive and moderately tolerant, respectively. There was interaction between water salinity and precocious dwarf cashew clones for chlorophyll a content, chlorophyll b content and DQI at 75 days after sowing.
引用
收藏
页码：474 / 481
页数：8
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