Search Results

You are looking at 21 - 30 of 1,394 items for :

  • genetic diversity x
  • All content x
Clear All
Free access

Carlos Miranda, Jorge Urrestarazu, Luis G. Santesteban, José B. Royo, and Valero Urbina

susceptibility to pests and diseases ( Bell, 1991 ). As a consequence, many of the traditional or local cultivars have been considered obsolete and replaced, leading to a dramatic loss of genetic diversity. The recognition of the need for the collection and

Free access

Marko Maras, Barbara Pipan, Jelka Šuštar-Vozlič, Vida Todorović, Gordana Đurić, Mirjana Vasić, Suzana Kratovalieva, Afrodita Ibusoska, Rukie Agić, Zdravko Matotan, Tihomir Čupić, and Vladimir Meglič

simple sequence repeat (SSR) markers from both the chloroplast and nuclear genomes of European genotypes ( Angioi et al., 2009 , 2010 ; Sicard et al., 2005 ). Information on genetic diversity of common bean in the western Balkans that encompasses former

Free access

Zhanao Deng, Fahrettin Goktepe, Brent K. Harbaugh, and Jinguo Hu

cultivars accounted for >95% of the acreage used in tuber production ( Bell et al., 1998 ; Deng et al., 2005c ). As a result, there is increasing concern over the loss of genetic diversity in caladium via loss of cultivars. Similar concerns have been raised

Full access

Njung’e Vincent Michael, Pamela Moon, Yuqing Fu, and Geoffrey Meru

genetic basis of crown rot resistance in these accessions that would inform breeders of best strategies for accumulating diverse disease resistance alleles through gene pyramiding is currently lacking. In addition, information on the genetic diversity

Free access

Vanina Cravero, Eugenia Martín, and Enrique Cointry

( Sonnante et al., 2002 ). An understanding of the magnitude and patterns of genetic diversity in crop plants has important implications for breeding programs and for conservation of genetic resources. Estimating the level of genetic diversity is of

Free access

Haiying Zhang, Jianguang Fan, Shaogui Guo, Yi Ren, Guoyi Gong, Jie Zhang, Yiqun Weng, Angela Davis, and Yong Xu

, most breeding programs have relied on the use of established cultivars or elite breeding lines, which resulted in lower genetic diversity within cultivated watermelon, impeding progress of watermelon breeding efforts ( Levi et al., 2004 ). It has been

Free access

Isabelle Y. Delannay, Jack E. Staub, and Jin Feng Chen

The genetic diversity of cucumber [ C. sativus (2n = 2x = 24)] market types and exotic germplasm (i.e., PIs) has been well documented and found to be extremely narrow [3%–8% polymorphisms among elite and exotic germplasm and 12% between botanical

Free access

Şurhan Göl, Sami Doğanlar, and Anne Frary

and climate requirements. Germplasm and landrace diversity has arisen due to soil, climatic, cropping, and use differences among regions and farmers ( Ernesto, 1992 ). However, genetically variable traditional varieties are being replaced by a few

Full access

Nader R. Abdelsalam, Rehab M. Awad, Hayssam M. Ali, Mohamed Z.M. Salem, Kamal F. Abdellatif, and Mohamed S. Elshikh

habitat as the result of by human activity. However, human intervention is needed to ensure species survival ( Volis, 2016 ). It has been proven that DNA-based markers are successful in assessing genetic diversity and in classifying plants ( Zhou et al

Free access

Wanmei Jin, Qiang Zhang, Sunzhong Liu, Qinping Wei, Wanmei Jin, Zongming Cheng, Xiaohui Xue, and Tingzhen Yang

( Benora et al., 2008 ; Cantini et al., 2008 ; Wang et al., 2011 ). SSR marker technology is an ideal molecular tool for analysis of genetic diversity because of its stability, transferability, ease of performance, and its locus richness ( Benora et al