Morpho-physiological response of 7 rice (Oryza sativa L.) varieties viz., Moroberekan, Co39, Azucena, Bala, IR64, Kalinga-III and Nipponbare was assessed under control and 100 mol m NaCl + 5 mol m CaCl2 stress in a flood bench system in greenhouse. Physiological and growth parameters were recorded after 21 or 42 days of salt stress. The statistical analysis revealed significant differences amon...

By 2050, the rice production needs to be increased by at least 50% in order meet growing food demands of global population. Among various yield limiting factors, high temperature is fast becoming a major threat sustain yields due its frequency occurrence and severity stress events. The development heat-resilient cultivars has been slow lack relevant donors for heat tolerance traits limited info...

The success of the rice harvest is influenced by various factors, one which selection quality seeds. Good seeds are those obtained during physiological maturity where moisture content in not too low/high. cooking time can be done calculating heat accumulation and testing germination. Heat total energy from solar radiation received plants, this value calculated recording maximum, minimum, humidi...

In this paper, we presented the information on growth and yield parameters of rice genotype (BPT5204 and IR64) in field condition. Investigated strains are related to the research article "Assessment of zinc solubilizing potentiality of Acinetobacter sp. isolated from rice rhizosphere" [1]. The article describes the inoculation effect of Acinetobacter sp. on rice genotypes. The statistical anal...

This study focuses on the growth and morpho-physiological responses of Malaysian commercial variety MR219 rice to salinity stress during early vegetative stages, specifically germination five-leaf stage. For responses, seeds were grown for 10 days in different salt concentrations. Low significantly improves seed increases total number germinated seeds. However, higher (160 mM NaCl) inhibits red...

Water scarcity and the increasing severity of water deficit stress are major challenges to sustaining irrigated rice (Oryza sativa) production. Despite the technologies developed to reduce the water requirement, rice growth is seriously constrained under water deficit stress compared with other dryland cereals such as wheat (Triticum aestivum). We exposed rice cultivars with contrasting respons...

Grain shape is an important trait for improving rice yield. A number of quantitative trait loci (QTLs) for this trait have been identified by using primary F2 mapping populations and recombinant inbred lines, in which QTLs with a small effect are harder to detect than they would be in advanced generations. In this study, we developed two advanced mapping populations (chromosome segment substitu...

To understand the physiological and molecular mechanisms underlying seedling salt tolerance in rice (Oryza sativa L.), the phenotypic, metabolic, and transcriptome responses of two related rice genotypes, IR64 and PL177, with contrasting salt tolerance were characterized under salt stress and salt+abscisic acid (ABA) conditions. PL177 showed significantly less salt damage, lower Na(+)/K(+) rati...

Characterizing the physiological mechanisms behind major-effect drought-yield quantitative trait loci (QTLs) can provide an understanding of the function of the QTLs-as well as plant responses to drought in general. In this study, we characterized rice (Oryza sativa L.) genotypes with QTLs derived from drought-tolerant traditional variety AdaySel that were introgressed into drought-susceptible ...

Forty three rice genotypes were used to evaluate their aroma detection through sensory test. Aroma was detected by 1.7% KOH as a sensory test. Thirteen rice genotypes were detected having strong aroma; ten had moderate aroma; fifteen had slight aroma and five had no aroma. In case of grain shape study, 37 genotypes were evaluated as slender and six as medium. In this study, grain aroma had sign...