Rice yield is a complex trait that strongly affected by environment and genotype × interaction (GEI) effects. Consideration of GEI in diverse environments facilitates the accurate identification optimal genotypes with high performance, which are adaptable to specific or environments. In this study, multiple trials were conducted evaluate grain (GY) four yield-component traits: panicle length, n...

An experiment was undertaken by utilizing fifty selected elite genotypes and released varieties of rice for ten yields yield contributing characters to assess genetic divergence at Zonal Agriculture Research Station, Igatpuri, Dist. Nashik during kharif-2020. Path coefficient analysis revealed that test weight exhibited highest positive direct effect on grain plant-1 subsequently spikelet ferti...

The present investigation was carried out to understand the interrelationship and degree of dependence grain yield on its components gall midge incidence elucidate their relative importance. experiment conducted using 42 rice hybrids developed by crossing 6 CMS lines seven testers in Line X Tester mating design, parents four checks. Observations were recorded incidence, fourteen component chara...

A rice introgression line, NIL-SS1, and its recurrent parent, Teqing, were used to investigate the influence of the introgression segment on plant growth. The current research showed NIL-SS1 had an increased flag leaf width, total leaf area, spikelet number per panicle and grain yield, but a decreased photosynthetic rate. The metabolite differences in NIL-SS1 and Teqing at different development...

In general, the fertility and kernel weight of inferior spikelets of rice (Oryza Sativa L.) are obviously lower than those of superior spikelets, especially under abiotic stress. However, different responses to heat stress are seemed to show between the superior and inferior spikelet, and this response is scarcely documented that the intrinsic factors remain elusive. In order to reveal the mech...

Grasses produce seeds on spikelets, a unique type of inflorescence. Despite the importance of grass crops for food, the genetic mechanisms that control spikelet development remain poorly understood. In this study, we used m34-z, a new mutant allele of the rice (Oryza sativa) E-class gene OsMADS34, to examine OsMADS34 function in determining the identities of glumes (rudimentary glume and steril...

Panicle type has a direct bearing on rice yield. Here, we characterized a rice clustered-spikelet mutant, sped1-D, with shortened pedicels and/or secondary branches, which exhibits decreased pollen fertility. We cloned sped1-D and found that it encodes a pentatricopeptide repeat protein. We investigated the global expression profiles of wild-type, 9311, and sped1-D plants using Illumina RNA seq...

Stomatal distribution is found to be an important trait of rice cultivars for increasing yield. A total of six rice cultivars, three from each of inbred and hybrid cultivars, were used to study stomatal distribution on the leaf epidermis and its influence on yield and yield attributing characters of rice during the Boro season. The hybrid cultivars exhibited superiority in respect of number of ...

An experiment was undertaken to identify heterotic rice hybrids for aerobic condition based on physiological and root characters associated with water stress tolerance in rice. Panicle harvest index, a substitute for spikelet fertility is used as a secondary trait in the selection of drought tolerant genotypes. Deep roots are required to explore the soil profile for effectively absorbing water ...

Studying the evolutionary patterns of rice agronomic traits in South China and analyzing characteristics improvement can provide insights into developmental trajectory breeding guide further enhancement variety yield. In this study, widely promoted varieties core parents developed through dwarf southern region, as well landraces, were collected planted three different ecological regions. A tota...