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Respon Varietas Unggul Kacang Tanah Terhadap Cekaman Salinitas Responses of Groundnut Varieties to Salinity Stress

机译：花生优良品种对盐胁迫的响应花生品种对盐胁迫的响应

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摘要

Soil salinity has negative effect on crop growth and crop productivity. Information on the response of groundnut varieties to salinity is required for varietal selection adaptable to saline soil condition. The research was conducted at the greenhouse of Indonesian Legume and Tuber Crops Research Institute (Iletri), Malang, East Java from July to September 2013. The objective of the research was to study the effect of salinity on groundnut growth.Ten groundnut varieties, consisted of seven varieties of Spanish type and three varieties of Valencia type, were tested on six levels of soil salinity. The treatment combinations were arranged in randomized complete block design, replicated four times. The soil salinity level was obtained by treating soil media using sea water dilution. Observations were made on electrical conductivity (EC) of the soil, plant height, leaf chlorophyll content index, shootand root dry weight, number and dry weight of pods, and number and dry weight of normal seeds. Results showed that increasing the salinity level inhibited both vegetative and generative growth and the critical age to the plants affected by salinity was 45-65days after sowing. All variables of plant growth and yield components decreased with the increase of salinity level. The highest EC value of the soil for groundnut planting to produce pods and seeds was 1.60-1.84 dS/m. Based on the growth variables, varieties of Valencia-type semed to be more tolerant to salinity than did Spanish-type, but there was no tolerance difference based on crop yield and yield components between the two groundnut groups. Higher tolerance of Valencia type was probably due to its ability to absorb and translocate more K in saline conditions. Among the Valencia type varieties tested, Domba variety indicated the most tolerance.
机译：土壤盐分对作物生长和作物生产力有负面影响。对于适应盐碱土壤条件的品种选择，需要有关花生品种对盐分响应的信息。该研究于2013年7月至9月在东爪哇省玛琅的印度尼西亚豆类和块茎作物研究所的温室中进行。该研究的目的是研究盐度对花生生长的影响。共有十个花生品种在六个土壤盐度水平上测试了西班牙七个品种和瓦伦西亚三个品种中的三个。治疗组合按随机完整区组设计安排，重复四次。通过使用海水稀释处理土壤介质来获得土壤盐度水平。观察土壤的电导率（EC），植物高度，叶片叶绿素含量指数，枝条和根的干重，豆荚的数量和干重以及正常种子的数量和干重。结果表明，增加盐度水平既抑制了营养生长，又抑制了生殖生长，并且受盐度影响的植物的临界年龄为播种后45-65天。盐度水平的升高，植物生长和产量构成的所有变量均降低。用于种植豆荚和种子的花生种植土壤的最高EC值为1.60-1.84 dS / m。根据生长变量，瓦伦西亚型品种比西班牙型品种对盐分的耐受性更高，但是在两个花生组之间，基于作物产量和产量构成因素的耐受性差异没有。瓦伦西亚类型的较高耐受性可能是由于其在盐分条件下吸收和转运更多钾的能力。在测试的瓦伦西亚类型的品种中，Domba品种表现出最大的耐受性。

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