Incomplete panicle exsertion in almost all the WA-based CMS lines is one of the major impediments in obtaining higher seed yield in hybrid rice breeding programs. Exploitation of Elongated Uppermost Internode (eui) mutants in rice is a viable genetic strategy to solve this problem. Present study was undertaken with an aim of characterizing the elongated uppermost internode mutants in rice germp...

Field experiments/On Farm trial (OFT) were conducted at Farmers field of village, Halsi, Lakhisarai under the supervision ICAR-Krishi Vigyan Kendra, BAU, Bihar, India in 2012-13 and 2013-14.To established a uniform plant stand for maximum yield net return ultimately drudgery reduction. The experimental was laid out Randomized block design replicated four times (Number Farmers) with six treatmen...

This paper deals with detennination of macroscopic fracture characteristics of random panicle systems. which represents a fundamental but little explored problem of micromechanics of quasibrittle materials. The panicle locations are randomly generated and the mechanical properties are characterized by a triangular softening forcedisplacement diagram for the interparticle links. An efficient alg...

1000-Grain weight and spikelet number per panicle are two important components for rice grain yield. In our previous study, eight quantitative trait loci (QTLs) conferring spikelet number per panicle and 1000-grain weight were mapped through sequencing-based genotyping of 150 rice recombinant inbred lines (RILs). In this study, we validated the effects of four QTLs from Nipponbare using chromos...

The use of fertilizer results in tall rice plants that are susceptible to lodging and results in reduced plant yields. In this study, using chromosome segment substitution lines, we identified an effective quantitative trait loci (QTL) for culm strength, which was designated STRONG CULM2 (SCM2). Positional cloning of the gene revealed that SCM2 was identical to ABERRANT PANICLE ORGANIZATION1 (A...

This paper presents a modification of tlte panicle swarm optimization algorithm (PSO) intended to combat the problem ofpremature convergence observed in many applications of PSO. The proposed new algorithm moves particles towards neorby particles of higher fitness, instead of amacting each panicle towards just the best position discovered so far by any particle. This is accomplished by using th...

Fifty two genotypes were evaluated to find out the genetic variability, character association, and path coefficient for reproductive traits of exotic rice germplasm in experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during December 2008 to May 2009. The analysis of variance showed significant variation for all the characters indicating wide geneti...

Rice at reproductive stage is more sensitive to environmental changes, and little is known about the mechanism of heat response in rice panicle. Here, using rice microarray, we provided a time course gene expression profile of rice panicle at anther developmental stage 8 after 40°C treatment for 0 min, 20 min, 60 min, 2 h, 4 h, and 8 h. The identified differentially expressed genes were mainly ...

Traditional Ofada rice varieties from South-West, Nigeria is preferred for its unique taste, aroma and massive potential export but has low yield. Based on this background, two varieties, FUNAABOR 1 2 were irradiated to create genetic variability as it affects vegetative traits. Seeds the exposed nine levels of 60Co gamma irradiation (0, 50, 100, 150, 200, 250, 300, 350 400 Gy). The seeds nurse...

Rice (Oryza sativa L.) breeding seeking to combine high productivity and cold tolerance for the temperate Latin America region is an important challenge. We estimated some useful parameters which can be used to investigate the genetic control of agronomic characters in crosses combining cold tolerance and productivity. A partial diallel design was used in crosses between six tropical indica ric...