Investigation of effects of bread wheat (Triticum aestivum L.) cultivars cultivation in mountainous area of Mazandaran of northern Iran

ABSTRACT: In the experiment, number of eight wheat (Triticum aestivum L.) cultivars i.e. N-8118, N-864, N-868, N-86 3, Darya, Shanghai, N–8019, and Milan were studied using the randomized complete block design in four replications, during the cropping season 2008–2009. The results obtained showed that there was as significant correlation between seed yield, biological yield, harvest indices and the traits of spikes, number of seeds per spike, numbers of tillers, 1000 – seed weights, number of seeds in spikes, and spikes per square meter. Since it was shown that the cultivars exhibited larger seed yield, higher levels of biological yield, and greater harvest indices that had longer spikes, more seeds per spike, large numbers of tillers, greater 1000 – seed weights, heavier seeds in spikes, and more spikes per square meter. The maximum seed yield (3567 Kg/ha) and the highest level of biological yield (21.17%) belonged to the cultivar N-8118, and the greatest harvest index (27.58%) was observed in the cultivar Darya.