IDENTIFICATION OF QUALITATIVE TRAITS IN SPRING WHEAT IN VERY LATE SOWING DATE AT KHUZESTAN (SOUTHWEST IRAN) HOT CLIMATE

In a multi-culture system, it is cultivated with high delay. This comes in South Asian countries including India and Bangladesh after harvesting rice and in Iran in the parts of Khuzestan Province after a common vegetable harvest and a large scale at the end of March. Therefore, the study of the qualitative traits of spring wheat is considered essential to obtain a quality product. Experiments were carried out in a randomized complete block design with split-split plot arrangement in two growing years of 2016 and 2017 at Safi Abad Dezful Agricultural and Natural Resources Research Center with three replications (located in Khuzestan province). In the main plots, cultivation pattern in three levels (stripe, two lines on the bed and three lines on the bed), in the sub-plot density of seed in three levels (400, 600, and 800 seed per square), and in sub-plot four varieties (Baj, Chamran, Chamran2 and S-92-19) have been tested to delay planting date with 100 days. Selection of the cultivation pattern and plant density treatments were in line with crop management to compensate for crop delay. Qualitative traits of wheat flour included bread volume, grain hardness, moisture content, wet gluten, grain protein and Zeleny number. The volume of bread (ml) was significant in all of the treatments and in the two lines on the bed (520/520), the density of 800 grains in square (519.82) and Baj (565.4) were the most. The measured traits were significantly different in different genotypes. Baj variety was superior to other cultivars. Correlation between traits was measured. Correlation between bread volume and grain was found positive (r = 0.5), Bv and Zeleny number (r = 0.288) and Bv and wet gluten (r = -0.142). The wheat with the above specifications was identified based on the recommendation of the Research Center for Cereals for bulk bread bulking.