Majid Dashti; Ali Ashraf Jafari
Volume 28, Issue 3 , October 2021, , Pages 493-506
Abstract
In order to study of forage quantity and quality traits of eleven accessions of two varieties (sub species) of Elymus hispidus var. hispidus and Elymus hispidus var. villosus and six accessions of Agropyron cristatum were carried out in two separate experiments using randomized complete block design ...
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In order to study of forage quantity and quality traits of eleven accessions of two varieties (sub species) of Elymus hispidus var. hispidus and Elymus hispidus var. villosus and six accessions of Agropyron cristatum were carried out in two separate experiments using randomized complete block design with three replications in Khorasan-e-razavi Agricultural and Natural Resources Research and Education Center. The seeds of the above accessions were sown in greenhouse conditions at a temperature of 20 ±2 ° C and 5 of them were planted in each plastic pot and after full establishment, the seedlings were transferred to the main soil. In order to, fully establish the seedlings in the main field and ensure the purity of the accessions, the first year of the project was considered as the year of establishment. The results of comparison between the varieties of E. hispidus showed that the villosus variety had higher forage yield, number of spikes and spike length compared to hispidus. In contrast, the percentage of plant establishment was higher in hispidus variety. In terms of forage quality, there are no difference between the E. hispidus accessions. In villosus variety, Chahar-Tagh accession due to high total dry matter (DM) yield (7732 kg ha-1), high dry matter digestibility (DMD) (43.6%), high soluble carbohydrates (8.8%) and consequently low acid detergent fiber (43.7%) was superior to other accession. In species A.cristatum 1727 accession had the lowest height, the lowest forage yield and the highest number of spikes. Among the accessions of A. cristatum, the highest and lowest annual dry matter yield of 12974 and 5692 kg ha-1 per year was achieved in 208 and 1727 accessions, respectively. Accessions 208 originating in Isfahan also had a significant percentage of digestibility and protein. In general, the results of this study showed that the accessions of the villosus variety as well as the 208 accession were superior to other accessions.
hamideh javadi; Ali Ashraf Jafari; Masoume Ramezani Yeghaneh; Mahmoud Amirkhani
Volume 23, Issue 3 , January 2017, , Pages 417-429
Abstract
This research was aimed to evaluate the agronomic and quality traits of sainfoin (Onobrychis sativa L.) available in the Natural Resources Gene Bank of Iran. The study was conducted in a complete randomized block design with two replications in Karaj (Alborz Iran) for two years.Forage dry matter and ...
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This research was aimed to evaluate the agronomic and quality traits of sainfoin (Onobrychis sativa L.) available in the Natural Resources Gene Bank of Iran. The study was conducted in a complete randomized block design with two replications in Karaj (Alborz Iran) for two years.Forage dry matter and seed yield, plant height, number of primary and secondary branches, number of seeds per plant, 1000-seed weight, powdery mildew disease infection, and the quality traits including dry matter digestibility (DMD), crude protein (CP), water soluble carbohydrates (WSC), crude fiber (CF), Acid detergent fibre (ADF) and total ash, were measured.The results showed that the populations of 3001 (Karaj) and 8206 (Tehran) had the higher mean values for agronomic traits. Populations 3001 (Karaj), and 11815 (Khalkhal) had priority for both dry matter yield and forage quality than other populations.The result of correlation analysis showed that both dry matter yield and seed yield were positively correlated with plant height and number of primary and secondary branch.Crude protein was positively correlated with seed yield, number of seed per plant, DMD and total ash and negatively correlated with ADF and CF.In principal component analysis, the first three components accounted for 50% of total variation among the populations. The contributions of the first to the third components were 23%, 17%, and 11%, respectively.This classification was in agreement with the classification of populations based on first two components. In cluster analysis, the populations were classified into four groups in a Euclidean distance of 18.5. The members of each group had the same traits.
Sadeq pourmoradi; Ali Ashraf Jafari
Volume 22, Issue 1 , June 2015, , Pages 121-130
Abstract
In order to study on the variation of forage yield and quality traits among seven accessions of red clover (Trifolium pratense L.), an experiment was conducted using a randomized complete block design with three replications in rangelands of Mazandaran province, Iran, in three consecutive years (2003-2005). ...
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In order to study on the variation of forage yield and quality traits among seven accessions of red clover (Trifolium pratense L.), an experiment was conducted using a randomized complete block design with three replications in rangelands of Mazandaran province, Iran, in three consecutive years (2003-2005). The data were collected for persistency, growth type and dry matter yield. Seven quality traits including crude protein (CP), dry matter digestibility (DMD), water soluble carbohydrates (WSC), crude fiber (CF), neutral detergent fiber (NDF), acid detergent fiber (ADF) and total ash were estimated using NIR methods. DMD-yield, WSC-yield and CP-yield were also estimated. Data were analyzed for each year and were combined over years. The means of treatments were comprised using Duncan¢s multiple range test. Results showed that the forage production of accessions 618, 1753 and 324 in each year and the mean of two years were higher as compared to other accessions. As a result, these accessions had higher forage yield, quality and persistency and they were suggested for cultivation in northern Alborz rangelands. Among them, the accession 1753, originated from Urmia, with prostrate growth habit was recognized as the best one for pasture regeneration in northern Alborz rangelands.
Mohammad Hasan vand; Ali ashraf Jafari; Ali Sepahvand; Shahram Nakhjavan
Volume 16, Issue 4 , January 2010, , Pages 517-535
Abstract
In order to compare yield and forage quality, six local genotypes of common vetch (Vicia sativa) were sown in two separate experiments under irrigated and dry land farming system using randomize complete block design with three replications in khorramabad agricultural research station during 2005 and ...
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In order to compare yield and forage quality, six local genotypes of common vetch (Vicia sativa) were sown in two separate experiments under irrigated and dry land farming system using randomize complete block design with three replications in khorramabad agricultural research station during 2005 and 2006. Data were collected for Forage fresh and dry matter (DM) yield, plant height and quality traits as: dry matter digestibility, (DMD), crude protein (CP), water soluble carbohydrates (WSC), crude fiber (CF), acid detergent fiber (ADF), neutral detergent fiber (NDF) and total ash. Results of combined analysis showed significant differences between two conditions for all of traits except DMD. The average values of DM (2.76 and 2.35 ton/ha), CP (24.8 and 21.6%), and WSC (10.9 and 12.9%) were obtained for Irrigated and drought condition respectively, indicated higher values of both DM yield and CP and lower values of WSC in Irrigated conditions. Genotype effect was significant for forage yield, plant height, WSC and NDF. Results of correlation coefficients showed that forage yield had positively correlated with plant height, WSC and CF and negatively correlated with CP. Whereas, WSC had positively correlated with DM yield, plant height and DMD and negatively correlated with CP, ADF, NDF and total ash. Using cluster analysis, 6 genotypes were classified into two groups. Using biplot diagram based on 5 droughtresistance indices, six genotypes were scattered. Talarizan (Azna) with average values of 3.1 and 2.7 ton/ha DM yield for optimum and dry condition, respectively had higher values in both conditions and recommended for cultivation in more rainy regions of Lorestan province. Genotypes of Torshabad (Doruod) and Fahre (Aligudarz) with average values 2.55 and 2.72 ton/ha DM yield, respectively for drought condition, were identified as tolerant to dryness and identified for cultivation in dry land farming system. Genotypes of Doruod and Bawki (Azna) with average values of 2.39 and 3.01 ton/ha forage production in irrigated condition recognized as sensitive to dryness and recommended for cultivation in irrigated conditions. Among the productive genotypes, Fahre with average values of 12.74% WSC had good forage quality.
Ebrahim Rahmani; Ali ashraf Jafari; Mojtabah Torkaman
Volume 13, Issue 1 , February 2006, , Pages 53-61
Abstract
In order to determine the best ecotype for pasture establishment in Lorestan province, Iran, 18 ecotypes of crested wheatgrass (Agropyron cristatum L.), were evaluated for yield and quality traits. Two experiments were conducted under optimum and drought stress conditions using complete block design ...
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In order to determine the best ecotype for pasture establishment in Lorestan province, Iran, 18 ecotypes of crested wheatgrass (Agropyron cristatum L.), were evaluated for yield and quality traits. Two experiments were conducted under optimum and drought stress conditions using complete block design with three replications in Brojerd, Iran during 2003-2004. The data were collected and analyzed for yield and quality triats. The results of combined analyses over two environments showed that genotypes 208S, 1727P12, 2087P10, 4056P4, 1727P7 and 619S produced highest forage dry matter yield with average values of 1451 to 1774 kg/h under drought stress conditions. The latter ecotype had a good quality. In normal condition 208P10, 208S, 1227P7, 208P8, 1727P10 produced higher dry matter yield than others. It was concluded that genotypes, 208P8, 1227P7, 208S and 208P10 with average values of 1765 kg/h forage production were the best varities for sowing under both irrigation and non irrigation areas. The genotypes 208P13 had both good quality and forage production under irrigation condition and the genotype 529M had good quality but its forage production was poor.