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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Significant differences in the trait were observed between hybrids as well as between locations.
EBSCOhost | | OPLEMENJIVANJE KUKURUZA NA PRINOS I KVALITET.
The hybrids were tested in parallel field experiments kukurhza and at three locations in West Serbia: Where Do We Stand? At all locations, the lowest value was found in HY01 Table 3. Australian Journal of Agricultural Research, 14, However, users may print, download, or email articles for individual use. Results of investigation shows a possibilities to increase yield and total maize production.
The results of many authors suggest that hybrids with higher average yields have better adaptation to favourable agroenvironmental conditions, with no linear trend observed due to significant regression deviations i. Can Gaenje Plant Sci However, remote access to EBSCO’s databases from non-subscribing institutions is not allowed if the purpose of the use is for commercial gain through cost reduction or avoidance for a non-subscribing institution. The highest regression coefficient was determined in HY06 and the lowest in HY The value for this parameter was highest in HY09, and that of HY06 was closest to the average.
The goal was to prolong corn production over years, presuming its higher profitability of production gross margin.
However, remote access to EBSCO’s databases from non-subscribing institutions is not allowed if the purpose of the use is for commercial gain through cost reduction or avoidance for a non-subscribing institution. Results and discussion The analysis of variance revealed significant differences in grain yield, grain moisture content at harvest, 1,kernel weight and ear length between hybrids belonging to different maturity groups and between locations Table 1.
Sowing was conducted in the first half of April in both years at all locations. Namely, cultivars that have regression coefficients greater than unity would be more adapted to favourable growing conditions, those with regression coefficients less than unity would be adapted to unfavourable environmental conditions, and those with regression coefficients equal to unity would have an average adaptation to all environments.
Weed Research Moreover, if the regression coefficient does not show significant differences across genotypes, regression lines can be grouped, with only deviation from regression being used as a stability parameter for genotype classification.
The soils at these locations differed in type and general fertility. The hybrids with higher mean values of the traits, regardless of maturity group, generally exhibited sensitivity i. Medium-late hybrids had higher yields and showed a better response to favourable environmental conditions compared to early-maturing hybrids.
Likewise, genotypes having a high value of S2di are considered highly unstable, whereas those with low values as highly stable.
SCIndeks – Članak
Poljoprivredni fakultet, Magistarska gajwnje. A genotype is considered stable if its performances are relatively constant across environments. Weed Science46 4: No warranty is given about the accuracy of the copy.
Weed Sci37, str. Zemlodelie1, str. Cultivar interaction with environmental factors location, year, soil type, cultural operations used, etc. American Society of Agronomy. The regression coefficient in the second year was lowest in HY06, highest in HY04, and closest to the average value in HY Click here to sign up.
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, Parametri stabilnosti prinosa zrna i komponenti prinosa hibrida kukuruza razlicitih FAO grupa zrenja.
The behaviour of most hybrids regarding this parameter was not uniform; hence, the bi value showed inconsistency, particularly across years.
The association found by Ordas et al. 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.
The efficacy of selection for grain yield potential could be increased by indirect selection via characters highly correlated with grain yield such as stay green. The lowest average yield was produced by HY01, and the highest by HY Weed Research35 5: Plant Breeding Reviews, 14, Crop Science, 11, Poljoprivredni fakultet, doktorska disertacija.
Weed Science44, str. Short-season hybrids generally have a lower genetic potential for yield as compared to medium-late hybrids, but show more favourable values of stability parameters. Log In Sign Up.
Regression coefficient bi values for grain yield mostly suggested no significant differences relative to the mean. This paper offers a review of investigation on project “Maize breeding for high yield and quality of grain and biomass”, No B, financed by Ministry of Science and Environment Protection, Serbia and Montenegro. Maydica37, str. The values of the gzjenje error of the mean of the regression coefficients suggest identical heterogeneity of bi in both years.
Weed Technology5: Weed Science44 2 ,