Za intenzivno gajenje hibrida kukuruza neophodno je, pored komponenti prinosa i drugih agronomski važnih osobina biljke, za objektivnu ocenu njihovih. Ministri Evropske unije odobrili su gajenje kontroverznog genetski modifikovanog novog roda kukuruza, TC američke kompanije DuPont Pioneer. S druge strane, domaće životinje troše tokom uzgoja velike količine semena kukuruza, što sa obzirom na ograničen zemljišni fond obično znači učestalo gajenje.
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The traits analysed showed significant interaction with the environment. A strategy to reduce GEI involves selecting cultivars with a better stability across a wide range of environments in order to better predict their behaviour Eberhart and Russell, ; Tai, The experiments were laid out in a randomised block design with four replications.
Weed Science Most hybrids in the second year showed significant deviations from regression for grain moisture content. Field Crops Research, 56 3 Significant differences in the trait were observed between hybrids as well as between locations.
The highest regression coefficient was determined in HY06 and the lowest in HY The soils at these locations differed in type and general fertility. The significantly different value of bi in HY02 in the first year suggests greater-than-average stability of this hybrid as compared to the other hybrids tested.
The soil in Mojsinje is a heavy-textured vertisol acid in reaction pHH2O 5. No significant differences were found between the regression coefficients for all hybrids in the first year and the average value. The results obtained were subjected to the factorial analysis of variance using F and LSD tests, and stability parameters were evaluated by regression analysis Eberhart and Russell, The lowest highly significant bi value was detected in HY02, and the value closest to the average in HY Zemlodelie1, str.
Iyvaskyla, Finland, July 31 — August 4. The regression coefficient of HY05 was closest to the mean. Journal of Central European Agriculture,15 4p. The goal was to prolong corn production over years, presuming its higher profitability of production gross margin. On the other hand, domestic animals require a lot of corn and considering the limited landarea, that often demands repeated sowing of corn continuous croppingconsequently leading to higher pest damages.
Regression coefficients for grain yield did not significantly differ from the mean except in one case. Genetika, 42 1 The medium-early hybrids HY03 and HY01 showed significant deviations from regression, and negative values were observed in most other hybrids. Although deviations from regression can be used as a stability parameter, the regression coefficient cannot be taken as a yield substituent due to the absence of significant correlation between regression coefficients and yield.
Plant Breeding, Genetics and Molecular Biology, 23, Introduction Identification of genotypes with a high potential for yield and stability across environments is an essential task in plant breeding.
The same authors underlined that regression analysis, although widely used in the previous period, provides useful information on genotype stability. However, Alwala et al.
SCIndeks – Članak
Weed Research35 5: Elsevier, Amsterdam, The Netherlands. Current knowledge and new research targets.
Maydica37, str. Grain yield and its components were assessed in 11 maize hybrids with different lengths of growing season FAO maturity groups using analysis of variance and regression analysis at three different locations in Western Serbia.
Sample of S1 progenies studied in more than one environment is sufficient for reliable estimate of mean value and variability of grain yield and grain moisture in synthetic populations of maize.
Discussion Genotype adaptability and stability are useful parameters for recommending hybrids for known cultivation conditions. Stability measures are based either on regression analysis or on principal component analysis Bernardo, Conversely, the hybrids giving high values for the trait, with HY03 and HY06 as representatives of lower maturity groups, had coefficient values greater than 1 and, occasionally, significantly higher values.
American Society of Gajenjee. Swedish Journal of Agricultural Research Crop Science31, str. No warranty is given about the accuracy of the copy. A broader picture of grain yield cannot be kukuryza predicted by this model. Western corn rootworm WCR appeared in Serbia in the late 80’s and quickly gahenje, causing increasing losses.
Australian Journal of Agricultural Research, 14, Given their higher yields and better response to favourable environmental conditions compared to the early-maturing hybrids, medium-late hybrids can be recommended for intensive cultural practices and low-stress environments.
Monitoring showed that crop rotation gives good results. The regression coefficient in the second year was lowest in HY06, highest in HY04, and closest to the average value in HY Where Do We Stand?
Book of Abstracts International Maize Conference: Agronomy Journal ,