The genetic basis for natural resistance to lethal infection with Rickettsia akari was studied in over 25 inbred strains, inbred hybrids, and outbred stocks of mice. Inbred mice infected intraperitoneally with the Kaplan strain of R. akari demonstrated three levels of response, susceptible (C3H/HeJ), intermediate (A/HeJ, A/J, A/WySn, BALB/cDub, BALB/cJ, and SJL/J), and resistant (AKR/J, AL/N, B...

Whether to develop inbred cultivars or F1 hybrids is a dilemma faced by many rice (Oryza sativa L.) breeders. This could be partially answered if one could select superior recombinant inbred lines with an equal yielding ability and good quality traits from commercial F1 hybrids. Thus, it was attempted in this study to select superior inbred lines from 2 commercial F1 hybrids after application o...

Objective: To measure the efficiency of using advanced generations some commercial tomato hybrids for small farmers and to identify most important yield components associated with yield. Design/Methodology/Approach: Seven saladette-type indeterminate growth were evaluated, as well their respective F2s F3s under greenhouse conditions. The evaluation three was carried out during 2013 agricultural...

Genomics-based prediction of hybrid performance promises to boost selection gain. The main goal of our study was to investigate the relevance of additive, dominance, and epistatic effects for determining hybrid seed yield in a biparental rapeseed population. We re-analyzed 60,000 SNP array and seed yield data points from an immortalized F2 population comprised of 318 hybrids and 180 parental li...

Abstract Background The utilization of heterosis has greatly improved the productivity cotton worldwide. However, a major constraint for large-scale promotion F 1 hybrid is artificial emasculation and pollination. This study proposed potential 2 hybrids to improve upland production through comparative evaluation generations. Results Eight varieties were analyzed crosses made according NCII inco...

The economic feasibility of using the tomato yellow leaf curl virus (TYLCV) resistant F1 hybrids (Solanum lycopersicum L.) may be improved with possibility their F2 generation in commercial production. Hence, this study was performed to evaluate and generations 15 TYLCV resistant/tolerant during 2018 2019 fall season identify best populations for Both were evaluated separately resistance, yield...

Neurological symptoms and cerebral metabolism following bilateral carotid artery occlusion (BCAO) were observed in stroke-prone spontaneously hypertensive rats (SHRSP), stroke-resistant SHR (SHRSR), normal Wistar-Kyoto rats (WKY) and the F1 and F2 hybrids between SHRSP and SHRSR or WKY. Systolic blood pressure recorded before BCAO was found to rank in the following order: SHRSP greater than F1 ...