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Genotypic Variation in Ability to Recover from Weed Competition at Early Vegetative Stage in Upland Rice
Improved cultivar Laos Recover from weed competition Slash-and-burn Traditional cultivar Upland rice
2010/3/4
In northern Laos, weeds are a major constraint to upland rice production in slash-and-burn systems. Two experiments were conducted to assess genotypic variation in ability to recover from weed competi...
Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development
Cassava Drought Drought recovery Lateral roots Plasticity Principal component analysis
2010/3/4
Soil moisture condition is a major factor that affects root system development and thus, crop production. This study aimed to evaluate genotypic variations of cassava in root system structures and the...
Genotypic Variation in Response of Rainfed Lowland Rice to Prolonged Drought and Rewatering
Drought Drought recovery Osmotic adjustment Rainfed lowland rice Root
2009/7/29
Duration of the drought period is important for plant response during drought and after rewatering. We hypothesized that, if drought duration is extended, (1) high seedling vigor and rapid developmen...
Relative Contribution of Hetero- and Auto-trophic Growth to Genotypic Variation of Seedling Vigor in Rice (Oryza sativa L.)
Autotrophic growth Genotypic variation Heterotrophic growth Oryza sativa L.,Relative growth rate Seed reserve Seedling vigor
2009/7/24
To elucidate the major physiological process to cause genotypic variation in the seedling vigor of rice, we analyzed the dry matter accumulation in the seedling for diverse cultivars distinguishing he...
Genotypic Variation of the Ability of Root to Penetrate Hard Soil Layers among Japanese Wheat Cultivars
Breeding materials Genetic variation Hard soil Penetrating ability of root Screening Soil compaction Triticum aestivum L. Wheat
2009/7/23
The hard soil in the field is a major constraint for the cereal production because it mechanically restricts the root expansion and water absorption. The ability of root to penetrate into the hard soi...
Genotypic Variation of Stomatal Conductance in Relation to Stomatal Density and Length in Rice (Oryza sativa L.)
Rice (Oryza sativa L.) Rice diverse research set of germplasm (RDRS) Specific stomatal conductance Stomatal conductance Stomatal density Stomatal length
2009/7/23
Stomatal conductance (gs) is an important trait responsible for the genotypic difference in gas diffusion for photosynthesis and transpiration in rice (Oryza sativa L.). We measured gs, stomatal densi...
Genotypic Variation in the Development of Seminal Root System of Rice under Different Culture Conditions in vitro
Genotypic variation in vitro Lateral root Link length Oryza sativa L
2009/7/23
To elucidate genotypic variations in the root system architectures of rice, which are determined by the emergence (branching) and elongation of lateral roots, we compared the development of seminal ro...
Genotypic Variation in Tolerance to Boron Toxicity in 70 Durum Wheat Genotypes
Boron toxicity boron concentration durum wheat genotypic variation
2009/1/12
By using 70 durum wheat (Triticum durum) genotypes, a greenhouse experiment has been carried out to study genotypic variation in tolerance to boron (B) toxicity in soil. Plants were grown in a soil co...