جستجوی مقالات مرتبط با کلیدواژه "رقم جو" در نشریات گروه "کشاورزی"

The temperate climate zone has a major role in barley production in Iran. Therefore, the release of high potential varieties with proper adaptability and yield stability is one of the most important breeding objectives in this climate zone. Armaghan variety with pedigree of Legia//Rhn/Lignee 527, was derived from a cross with the aim of high yield potential and proper adaptationin in 2001-2002 that was made in Cereals Research Department in Seed and Plant Improvement Institute. In order to study the yield stability and adaptability of the elite barley lines, Armaghan and other genotypes including barley cultivar Nosrat as check were evaluated in eight locations for two years and their grain yields were compared. Results indicated that Armaghan with 8362 kgha-1had higher grain yield compared to other genotypes and check cultivar Nosrat with yield of 7857 kgha-1. Results of on-farm trials showed that Armaghan variety with a mean grain yield of 6584 kgha-1compared to check cultivar Nosrat with grain yield of 6019 kgha-1, had yield increase of 565 kgha-1(more than 9%). Armaghan variety has a spring growth habit, six-row spike, average plant height of 93 cm, and 1000 kernel weight of 44 g. This variety showed infection response of semi-resistant to semi-susceptible to powdery mildew, resistant to semi-susceptible infection response to leaf strip and infection response of 0-50MS to yellow rust.

Barley cultivar Goharan with pedigree of "Rhn-03//L.527/NK1272", was selected among barley genotypes from ICARDA and was identified as is a suitable cultivar for temperate regions under both terminal drought stress and non-stress conditions with different irrigation water management. Preliminary, advanced and elite yield trialsof this cultivar under two conditions (terminal droughtstress and non-stress) were carried out at Karaj, Birjand, Isfahan and Varamin stations. The results of the experiments showed that under non stress conditions, Goharan cultivar had a mean grain yield of 6269 kgha-1 versus 5244 kgha-1 of Rihane ( 20% increase), and under terminal drought stress had mean yield of 4720 kgha-1 versus 4035 kgha-1 of Rihane ( 17% increase). This cultivar, had a mean protein content of 12 percent which indicates its good quality. Study on status of irrigation water use productivity in some drought tolerance barley genotypes showed that cultivar Goharan had the highest amount of water use productivity among genotypes. Results of on-farm trials showed that in average Goharan had 1196 and 623 kgha-1 higher grain yield than Nosrat and Yousef cultivars, respectively under both drought stress and non-stress conditions.Based on importance of water in recent years, drought and lowering of groundwater resources, especially in arid and semi-arid regions of the country,where, there is a competition for irrigation water to cultivate spring products,cultivar Goharan was released for cultivation in non- stress areas and under drought stress in the temperate zone of the country for the sustainability of the barley production.