Genetic diversity and relationships among populations of jackfruit, an underutilized nutrient-rich climate-smart fruit tree crop in Kenya and Uganda

2021 ◽  
pp. 1-19
Author(s):  
Redemtor Awuor Ojwang ◽  
Edward K. Muge ◽  
Evans N. Nyaboga ◽  
Betty N. Mbatia ◽  
Dorington O. Ogoyi
Genome ◽  
1995 ◽  
Vol 38 (2) ◽  
pp. 201-210 ◽  
Author(s):  
F. N. Wachira ◽  
R. Waugh ◽  
W. Powell ◽  
C. A. Hackett

Camellia sinensis is a beverage tree crop native to Southeast Asia and introductions have been made into several nonindigenous countries. No systematic assessment of genetic variability in tea has been done anywhere. In this study, random amplified polymorphic DNA (RAPD) analysis was used to estimate genetic diversity and taxonomic relationships in 38 clones belonging to the three tea varieties, assamica, sinensis, and assamica ssp. lasiocalyx. Extensive genetic variability was detected between species, which was partitioned into between and within population components. Seventy percent of the variation was detected within populations. Analyses based on band sharing separated the three populations in a manner consistent with both the present taxonomy of tea and with the known pedigrees of some clones. RAPD analysis also discriminated all of the 38 commercial clones, even those which cannot be distinguished on the basis of morphological and phenotypic traits.Key words: genetic diversity, RAPDs, Camellia sinensis.


2021 ◽  
Author(s):  
Juleri M Upendra ◽  
Shari Nair ◽  
Satyawada R Rao ◽  
Harchand R Dagla

Abstract Genetic diversity of Salvadora oleoides Decne is analyzed by cumulative data of 10 Random Amplified Polymorphic DNA (RAPD), 10 Inter Simple Sequence Repeats (ISSR) and 7 Intron Splice Junction (ISJ) markers. The plant is an evergreen fruit tree and well distributed in semi-arid and sub-humid climatic conditions of Rajasthan, India. RAPD, ISSR and ISJ primers accounted for 84.4%, 85.3%, 85.9% polymorphism. Average 0.23 PIC is accounted for RAPD, ISSR and ISJ primers. The genetic similarity ranged between 0.42-0.89. Analysis of molecular variance (AMOVA) revealed higher variation (73%) at intra-population than inter-population (27%) level. Genetic distances based on Un-weighted Pair Group Method with Arithmetic mean (UPGMA) dendrogram and Principal Coordinate Analysis (PCoA) is correlated with physical distances or climatic conditions of Salvadora oleoides Decne in a semi-arid and sub-humid environment of Rajasthan. The present investigation may help in the understanding of gene flow systems between physical distances and environmental heterogeneity of the populations for better management of Salvadora oleoides Decne in the region.


2018 ◽  
Vol 105 (5) ◽  
pp. 898-914 ◽  
Author(s):  
Maria M. H. Wang ◽  
Elliot M. Gardner ◽  
Richard C. K. Chung ◽  
Ming Yee Chew ◽  
Abd Rahman Milan ◽  
...  
Keyword(s):  

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Khaled M. Hazzouri ◽  
Jonathan M. Flowers ◽  
Hendrik J. Visser ◽  
Hussam S. M. Khierallah ◽  
Ulises Rosas ◽  
...  
Keyword(s):  

2011 ◽  
pp. 741-748
Author(s):  
D. Giovannini ◽  
F. Punelli ◽  
A. Leone ◽  
A. Liverani ◽  
M. Ranieri ◽  
...  

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1758
Author(s):  
Dennis Kyereh ◽  
Anna Maňourová ◽  
Prasad S. Hendre ◽  
Alice Muchugi ◽  
Marie Kalousová ◽  
...  

Allanblackia parviflora A. Chev. is an indigenous tree species which is found in West African rainforest zones. It is an underutilized fruit tree species that has been targeted for improvement as part of efforts to domesticate high-value indigenous multi-purpose trees for fruit and seed production in Africa. Allanblackia has several benefits, such as providing shade, timber, and medicine; however, the production of edible oil from its seeds is the economically most important use. There is evidence that the Allanblackia seed oil, which is used for cooking, the production of margarine and the manufacturing of ointments and soap, is being developed as a new agri-business in Ghana, Nigeria, Cameroon, and Tanzania. Despite the nutritional and socio-economic importance of A. parviflora, it is still at the early stages of its domestication process. Even though several researchers have explored the biology of this species, there is very limited scientific information available on its morphological and genetic diversity and silvicultural management in West Africa. Therefore, this systematic review presents an up-to-date overview on the uses, seed chemical composition, and morphological and genetic diversity of this fruit tree species, and proposes a way forward for future research towards improvement and domestication.


Sign in / Sign up

Export Citation Format

Share Document