جستجوی مقالات مرتبط با کلیدواژه « توده بومی » در نشریات گروه « بیوتکنولوژی و ژنتیک گیاهی »

Sainfoin (Onobrychis viciifolia Scop.) is one of the most important ancient fodder plants with special adaptability andSainfoin (Onobrychis viciifolia Scop.) is one of the most important ancient fodder plants with special adaptability and quality that is cultivated in many parts of Iran. A field experiment in form of complete block design with three replications was conducted in Research Station of Agricultural and Natural Resources Research of Isfahan province during 2013- 2015. Twenty native populations from various regions of Iran were tested. Morphological characteristics, yield and fodder quality of plants was measured. According to results, there was less than 10 days difference among populations from planting to flowering stage. The phenological stages (beginning of spring growth, flowering time) in the second year began earlier than that of the first year. Maximum leaf number (127) and leaf/stem ratio (2.5) were obtained in Oshnavieh and 2759, respectively. PLC produced the highest dry matter content (31.27%) and dry forage yield (3179.3 kg ha-1) among populations. Populations also differed in terms of fodder quality. Most populations had adequate yield and quality potential for livestock feeding. Regarding variation in different traits among populations, each population can be used for different goals such as breeding programs, soil conservation and production of high dry matter yield. In generally, 3001 and 13535 populations (tolerant to powdery mildew disease) with acceptable forage yield and quality can be recommended in Isfahan climatic conditions. .

Chamomile is one of the most important medicinal plants in commerce that has many applications in drug and sanitary industries. In order to evaluate the genetic diversity of different scentless chamomile landraces (Matricaria inodora L.) based on morphological traits and molecular markers, 17 landraces were collected from different areas of Iran. In order to evaluate the morphological traits, the landraces were planted in an augmented design in Fozveh station of Agriculture Research Center of Isfahan. Forty-four arbitrary 10, 15 and 18-mer primers were used for PCR amplification of total genomic DNA. Twenty nine primers were selected based on the quality and reliability of their amplification. Genetic similarity between the genotypes was estimated using Jaccard's similarity coefficient and UPGMA method of cluster analysis was conducted on the collected data. Results showed that yield of flower per plant, number of flower per plant, and 1000 grain weight had maximum variance coefficient. Days to end of flowering and Days to flowering had minimum variance coefficient. Genetic similarity coefficient was estimated in a range of 0.20–0.72, with a mean of 0.39. According to the cluster analysis on both morphological and molecular markers, the studied landraces were classified into 5 clusters, but intra-groups landraces were different. Results of cluster analysis showed that genetic diversity was not coordinated to the geographical distribution.

In order to evaluate agronomic attributes of six Azarshar red onion morphotypes, an experiment was conducted in Shabestar region, Iran in a randomized complete block design (RCBD) with three replications. Seeds of experimental onion landreces were collected under isolated condition and onion yield, bulb diameter, number of centers, dry matter percentage, number of edible layers, number of bulb scale, and percentage of twin onions were measured. Cluster analysis grouped the morphotypes into three clusters. However, grouping based on agronomic attributes showed no correspondence with the geographical pattern. Ssignificant differences in all studied attributes, except number of bulb scale, indicated diversity among Azarshar red onion morphotypes. According to the results, Azarshar red onion landrace is a potential resource of useful genes for breeding programs. The results revealed that the red onion morphotypes was not suitable for industrial processing due to the their low dry matter percentage and should be used in fresh-market. Furthermore, the correlation between measured attributes showed that selection of onions with larger diameter could be suitable in breeding for higher yield.