Response of different lines and cultivars of rice subjected to low temperatures under controlled conditions
Journal Title: Biotecnología Vegetal - Year 2017, Vol 17, Issue 1
Abstract
Rice (Oryza sativa L.) is the most important food crop in the world and primary source of food for more than a third of the population. The low temperatures are among the main abiotic stresses that affect the yield of this cereal. The objective of this work was to determinate the response of different lines and cultivars of rice in seedling state to low temperature stress under controlled conditions. 172 lines and cultivars were studied. It were subjected to 5 0 C for 24 hours, when the plants were about three to four leaves. The evaluations were conducted by measured of chlorophyll fluorescence and visually. A wide range of response was obtained, which indicated a high allelic diversity for the low temperatures sensitivity in the studied germplasm. A group of 30 cultivars responded more favorably to the cold and the most prominent cultivars showed Fv/Fm values between 0.80 and 0.89. A significant relationship between visual evaluation and chlorophyll fluorescence was found. The correlation coefficient revealed a moderately strong relationship between both variables. Tolerant plant materials were more consistently identified. However, the dispersion between methods increased to more susceptible cultivars.
Authors and Affiliations
Sandra H Díaz Solís , Fernando Pérez de Vida , Juan Rosas Caissiols , Rogelio Morejón Rivera
Keywords
Related Articles
- EP ID EP682988
- DOI -
- Views 158
- Downloads 1
Analysis of genetic diversity using microsatellites (SSR) incultivars of the Cuban cassava germplasm
A study was carried out in order to make a deep analysis of the current knowledges cassava (Manihot esculenta Crantz) genetic diversity, and to evaluate its phylogenetic relationship with relatives cultivated in Africa,...
Behavior of different rice explants (Variety IACuba-28) in genetic transformation by Agrobacterium tumefaciens
ACT The present work describes the behavior of four rice explants: coleoptiles, embryogenic calli, earliest calli and mature embryos, in genetic transformation via Agrobacterium tumefaciens, applying the protocol estab...
Physico-chemical characterization of the ripe fruit in three mutants by FHIA-21 (Musa AAAB)
Morphoagronomic evaluations of mutants obtained through the Programs of in vitro mutagenesis are essential for the incorporation of new varieties to bananas production. The present study enabled to evaluate several phy...
Influence of phytotoxic metabolites of Altenaria porri (Ellis) Ciferri on plants and callus of Allium sativum L. with a view to plant breeding
In order to obtain phytotoxic metabolites from Alternaria porri and to know their influences on garlic plants and calli in plant breeding for resistanse to alternariosis, a research was carried out. Filtrates were obtai...
Effect of in vitro culture on the metabolic profile of Psidium guajava L.
The use of in vitro techniques for the production of secondary metabolites in the pharmaceutical industry has increased widely. The organ culture is one of the alternatives for the identification of new compounds or to...