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SELEKSI IN VITRO TUNAS KENTANG (Solanum tuberosum L.) TERHADAP CEKAMAN SALINITAS (NaCl)

Naharika, Nuri (2019) SELEKSI IN VITRO TUNAS KENTANG (Solanum tuberosum L.) TERHADAP CEKAMAN SALINITAS (NaCl). Bachelors Degree (S1) thesis, University of Muhammadiyah Malang.

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Abstract

The need for agricultural products is increasing in line with the increase in population. Horticulture products have a large role in meeting these food needs. Potatoes (Solanum tuberosum) is one commodity that plays an important role and gets priority to be developed. Although the potential demand for potatoes is quite high, supported by the potential for extensive land availability, the development and increase in potato production is slow. One factor that causes this is the obstacle of the growing environment of potatoes, one of which is salinity stress.Stress due to excess Na+ salt can affect several plant physiology processes from the germination process to the growth process in plants. Salt can cause stomata closure, which reduces the availability of CO2 in leaves and inhibits carbon fixation, can also increase the generation of reactive oxygen species (ROS) and induces oxidative stress. Development of potato varieties needs to be done to obtain superior varieties of potatoes that are able to adapt and produce on planting land that tends to copy. In vitro culture techniques have now developed into plant propagation techniques that are very important in various plant species. Determination of lethal dose 50 (LD50) aims to determine the highest dose to kill 50% more than the population by using several NaCl concentrations of 0 mM, 50 mM, 100 mM, 150 mM, and 200 mM NaCl. Lethal dose 50 is suitable for killing planlets as much as 50% at 100 mM NaCl concentration. The Lethal dose 50 was then used as a reference for concentration to determine the effect of several types of NaCl concentration on the development and growth of potato plantlets. The planlet response of potatoes at each NaCl concentration varies, which can affect the overall parameters in this study. NaCl concentration as much as 75 mM can be used for the development of potato varieties because at these concentrations plantlets can still grow despite a decrease in growth and development

Item Type: Thesis (Bachelors Degree (S1))
Student ID: 201510200311034
Thesis Advisors: Maftuchah (0012036801), Syarif Husen ( 0021046402)
Keywords: NaCl, potato plantlets, growth response.
Subjects: S Agriculture > S Agriculture (General)
S Agriculture > SB Plant culture
Divisions: Faculty of Agriculture and Animal Husbandry > Department of Agrotechnology (54211)
Depositing User: 201510200311034
Date Deposited: 24 Aug 2019 05:46
Last Modified: 09 Sep 2019 03:18
URI : http://eprints.umm.ac.id/id/eprint/52062

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