Bread Wheat (Triticum aestivum L.) is an important cereal crop, which receives the most attention of specialists in plant breeding and production as worldwide. The Knowledge of the interaction between genotypes and environment with yield and yield components is a key aspect of effective selection in crop improvement. Therefore, the objective of this study was: to identify Adaptable bread wheat variety/ies with high level of grain yield and yield stability across locations. The study used 16 bread wheat released varieties, against local check at Fitche Agricultural Research Center (FiARC) in 2020-2022 cropping season. Ten important agronomic traits data were evaluated. Analysis of variance noticed significant difference, among varieties in both separated and combined analysis of variance. The combined ANOVA and the additive main effects and multiplicative interactions (AMMI) analysis for grain yield across environments exhibited significantly affected by environments, which explained 76.6% of the total variation. The genotype and genotype environmental integration were significant and accounted for 8 and 13.1%, respectively. Principal component (PCA) 1 and 2 accounted for 6.5 and 3.5% of the GEI, respectively, with a total of 10% variation. Generally, Sanete and Dandaa varieties were identified for yielding ability and stability, and recommended for the study area and similar agro-ecologies.

The effects of seed provenance on daily seed germination, cumulative a seed germination and germination percentage of Jatropha Curcas L. was studied in the 2019 at the fruit and vegetable teaching and research Farm of Department of agricultural Science, Shehu Shagari College of Education Sokoto, Nigeria. The study area comprised of four senatorial zones of Sokoto state, Nigeria covering Sokoto Central Zone with Sokoto South, Wamakko, Kware and Binji Local Government Area. The Sokoto West Zone with Bodinga, Yabo, Shagari and Tambuwal Local Government Area. Sokoto East Zone with Gwadabawa, Goronyo, Isah and Sabon-Birni Local Government Areas. Seed accessions collected were dried properly and fumigated with nuval chemical and stored in polyethene bags. Uniform seed treatment was given to all the accessions prior to sowing, by soaking the seeds in water for 12 hours and subsequently sown directly on the field. They were laid out in a split plot design with three replications. Spacing was within the main plot, while seed germination was allocated the sub-plot. Data were recorded on percentage establishment, Daily seed germination, cumulative seed germination and germination percentage after the establishment count. Significant means were separated using the Duncan’s New Multiple Range Test (DNMRT). The highest daily germination (3.33a) was recorded at the seed accession (SE1), followed by the SE2 (P>3.00a) and the least being the SE4 (p<1.00C) whereas on the cumulative germination however, the seed accession at SE1 had the highest (P>17.67a) followed by those of accessions SC1 and SW4 (who were at par (P<14.33bc) and the least that form the accession of SC4 (P<5.33f). The seed accession at SE1 had the highest (P.>88.33a), followed by the SC1, and SW4 which were statistically at far (P.<71.67). Whereas the least being that at the accession SC3 (P.<46.67e). Consequently the seed at accession SE1 are therefore recommended for Jatropha cultivation in the semi-arid zone of Nigeria.