Impact of sowing date on bread wheat kernel quantitative and qualitative traits under Middle East climate conditions

Abstract

The current study explored the effects of six spring wheat (Triticum aestivum L.) cultivars, four sowing dates (early, timely, late and very late) and their interactions on quantitative and qualitative traits during two cropping years. A combined analysis of variance (ANOVA) indicated that the effect of sowing date was significant on kernel yield and filling period. The quality traits were not significantly affected by the sowing date. Interaction of sowing date × cultivar × year was significant for some quantity and quality traits including yield, filling period, sedimentation value and gluten index. Average kernel yield reduction of all the cultivars, measured under late and very late planting, was 34% and 50% of optimum sown (November) in 2013-2014, and 25% and 38% in 2014-2015, respectively. For most of the studied traits, the effect of year was confirmed on higher level compared to the effect of cultivar or sowing date. The range for cultivar effect was high for thousand kernel weight, medium for gluten index and low for the other traits. The sowing date had the highest contribution to kernel yield followed by filling period and wet gluten, respectively. Negative relationship was observed between quality traits and kernel yield, but quality traits significantly and positively correlated with each other. In summary, the quality and quantity potential of wheat can be exploited by planting it at optimum time.

The impact of sowing date and nitrogen fertilization on Yield in four bread wheat cultivars

“…Similarly, improved grain yields were attained under optimal sowing conditions by (Said et al, 2012;El-Areed et al, 2017;Ren et al, 2019;Sayed et al, 2021). Sasani et al (2020) found that negative effects of late sowing date on bread wheat performance through poor germination, which causes a decrease in growth of individual plants and reduces number of spike per plant under low temperatures when compared to recommended sowing date.…”

Evaluation of Local Bread Wheat Cultivars for Grain Yield and Its Attributes at Different Sowing Dates under Assiut Conditions

“…Sowing after 30 th November led to decrease most of the studied traits in both seasons. Sasani et al (2020) indicated that negative effects of late planting on crop performance through poor germination, which causes reduction in growth of individual plants and reduces tiller production under low temperatures when compared to early planting. The interaction between wheat cultivars and sowing dates had a highly significant effect on all studied traits in both seasons (Table 6).…”

Yield, Protein Content and Water-Related Physiologies of Spring Wheat Affected by Fertilizer System and Weather Conditions

“…The analysis of variance for protein content indicated variance across all experimental factors and their interactions (Y × F, Y × S). In their studies, Kadar et al [57] and Sasani et al [59], concluded that the protein content was significantly influenced by both the year and the genotype. Furthermore, additional research has demonstrated that the protein content in spring wheat varies considerably depending on the wheat genotype and nitrogen dose [57,58,[60][61][62].…”