Ali Imani; Ghader Amani; Mansoore Shamili; Amir Mousavi; Rezai Hamed; Mousa Rasouli; Pedro José Martínez- García
Abstract
Phenotypic and genetic diversity are mandatory aspects to allow future breeding in fruit trees. This work was aimed to study the genetic diversity and heritability of important phenological traits in several almond genotypes. The seedlings were planted in randomized complete block design with 3 replications ...
Read More
Phenotypic and genetic diversity are mandatory aspects to allow future breeding in fruit trees. This work was aimed to study the genetic diversity and heritability of important phenological traits in several almond genotypes. The seedlings were planted in randomized complete block design with 3 replications (two trees in each replication). Phenological traits including flower size, petal length, petal width, sepal length, sepal width, pistil length, pistil thickness were evaluated. Furthermore, number of stamens, first flowering, 10% flowering, 50% flowering, 90% flowering, date of flowering among 33 selected almond cultivars and genotypes were also evaluated using almond descriptors during 27 February to 29 March 2017. The results showed the existence of genetic variation among the studied cultivars and genotypes. A great phenotypic variation was observed for pistil length, petal width and flowering time. The exact and extended characterizations of all the new materials of almond could provide breeders new opportunities to develop future crosses and to obtain more resistant seedlings that can be better adapted to extreme and changing weather conditions in this area and in other regions of the world.
Elene Maghlakelidze; Zviad Bobokashvili; David Maghradze
Abstract
Plum local varieties and forms are widespread in all regions of Georgia. Despite the wide dissemination of this crop, the number of cultivars is not quite a lot. Due to this reason, study of cultivars has been carried out in a collection plot of the Scientific-Research Center of Agriculture, in village ...
Read More
Plum local varieties and forms are widespread in all regions of Georgia. Despite the wide dissemination of this crop, the number of cultivars is not quite a lot. Due to this reason, study of cultivars has been carried out in a collection plot of the Scientific-Research Center of Agriculture, in village Jighaura. Eight plum (Prunus domestica L.) cultivars including: Amers, Bluefree, Chanchuri, Empresss, President, Stanley, Shaviqliavi, Tophit were used in this study. The following agronomic and biological characteristics were studied for the cultivars: calendar periods of phenological phases, pomological description of fruits, fruit chemical analysis and productivity. The results showed that average time of maturity was from 02.08. to 30.09. The average fruit yield in this trial for Empress and President Stanley cultivars was 88.4- 98.1 kg per tree. The weight of fruit ranged from 58.4 g to 26.2 g. The cultivars Tophit, Empresss and President contain the highest contents for soluble solid substance – respectively 14.23%, 12.81%, 12.64%. According to the obtained results, the following cultivars of plum can be chosen for further cultivation which can improve the local assortment of plum like Tophit and President (fresh production), Empress and Stanley (fresh/dry production). They are characterized by early starting production, high-productivity and high quality of fruits.