Germination and biomass partitioning in creole varieties of cowpea (Vigna unguiculata (L.) Walp.) under salinity conditions

IF 0.6 4区农林科学 Q4 AGRONOMY

Bioagro Pub Date : 2023-08-31 DOI:10.51372/bioagro353.3

Francisco H. Alves de Andrade, Ronimeire Torres da Silva, M. D. F. De Queiroz Lopes, M. A. Barbosa Neto, Antonia D. C. De Lima Ferreira, Maria I. Batista Clemente, Erisvaldo Silva de Oliveira

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引用次数: 0

Abstract

Saline soils can limit seedling germination and growth of the crops. This research sought to identify whether the cowpea varieties Pingo-de-ouro and Coruja are tolerant to salinity in terms of germination and biomass partitioning. A completely randomized design in a 2 x 4 factorial arrangement, totaling eight treatments with four replications was used. The treatments consisted of two varieties of cowpea in addition to NaCl salinity with four levels of electric conductivity (0.0, 3.3, 6.6 and 9.9 dS∙m-1). The variables analyzed were percentage of germination (PG), first germination count (FGC), germination speed index (GSI), average germination time (AGT), percentage of seedling (PSB), shoot (PSHB), root (PRB) and cotyledon (PCotB) biomass, PCotB/PSB ratio and salinity tolerance index (STI). The Pingo-de-ouro variety showed tolerance to 3.3 dS∙m-1 displaying an increase in PSB and PSHB, while the Coruja variety tolerated 6.6 dS∙m-1 with a more significant investment in PRB. Both displayed no significant statistical reduction in percentage of G, FGC, GSI, AGT, and STI up to 3.3 dS∙m-1 for the Pingo-de-ouro variety and 6.6 dS∙m-1 for the Coruja one. Thus, those genetic materials can be used to breed tolerant plants. The present research also provides results for further studies at physiological, molecular, and field conditions.

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豇豆克里奥尔变种的发芽和生物量分配在盐度条件下

盐碱地会限制作物幼苗的发芽和生长。本研究旨在鉴定豇豆品种Pingo-de-ouro和Coruja在发芽和生物量分配方面是否具有耐盐性。采用2 × 4因子完全随机设计，共8个处理，4个重复。在4个电导率水平(0.0、3.3、6.6和9.9 dS∙m-1)的NaCl盐处理下，采用2个豇豆品种进行处理。分析的变量包括发芽率(PG)、首次发芽数(FGC)、发芽速度指数(GSI)、平均发芽时间(AGT)、幼苗、茎、根、子叶生物量(PCotB)、PCotB/PSB比值和耐盐指数(STI)。Pingo-de-ouro品种对3.3 dS∙m-1的耐受性显示PSB和PSHB的增加，而Coruja品种对6.6 dS∙m-1的耐受性显示PRB的增加。在G、FGC、GSI、AGT和STI的百分比上，pgo -de-ouro品种和Coruja品种的差异均无统计学意义，分别为3.3 dS∙m-1和6.6 dS∙m-1。因此，这些遗传物质可以用来培育耐受性强的植物。本研究也为在生理、分子和野外条件下的进一步研究提供了结果。

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来源期刊

Bioagro Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.40

自引率

37.50%

发文量

期刊介绍： Bioagro es una revista científica del Decanato de Agronomía de la Universidad Centroccidental “Lisandro Alvarado” (UCLA). Su periodicidad es cuatrimestral y se publica en los meses de enero, mayo y septiembre. Cada trabajo es revisado por al menos dos especialistas en el área, externos a la revista, de cuya opinión depende la aceptación definitiva. Se utiliza sistema de arbitraje doble ciego. La revista va dirigida, fundamental pero no exclusivamente, a profesionales y técnicos del área agrícola. Su objetivo es publicar trabajos científicos originales e inéditos en ciencias agrícolas que enfoquen aspectos de agronomía, botánica y propagación de plantas, entomología y zoología, suelos, fitopatología y protección vegetal, ingeniería agrícola, genética y mejoramiento de plantas, ecología, procesamiento de productos agrícolas, biotecnología y sociales. También pueden ser publicados artículos cortos en los que se presenten descubrimientos científicos, desarrollos tecnológicos y resultados de diagnósticos integrales, en la modalidad de Notas Técnicas. En Venezuela, se encuentra en las bibliotecas de todas las universidades e institutos de educación superior que ofrecen carreras agronómicas, así como de los entes oficiales de investigación agropecuaria. En el exterior, la revista llega a universidades y/o institutos de investigación agrícolas de todos los países de América Latina así como Estados Unidos, Canadá y España.