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prerequisite for future breeding and crop improvement programs. More recently, attention has been focused on the use of different DNA molecular markers to discriminate among tea germplasms such as restriction fragment length polymorphism [RFLP ( Kaundun and

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were studied ( Table 1 ). The primer pairs revealing polymorphism in P. rex were further investigated for cross-species amplification in its sister species P. thamnophila (Hand.-Mazz.) H.L.Li ( Ree, 2005 ; Yang et al., 1998 ), which is also endemic

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populations exhibited particular geographic distribution patterns with the former occurring in the east and west zones of the latter. The polymorphism of both the sexual system and the population composition within the species provided an ideal system to study

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loci are powerful markers for studies of population genetics because of their high polymorphism, codominant transmission, and presumably neutral and extensive genome coverage ( Powell et al., 1996 ). We report the isolation and characterization of a set

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relationships ( Castro et al., 2012 ; Guo et al., 2012 ; This et al., 2004 ). Simple sequence repeats (SSR) markers provide excellent DNA fingerprinting methods because of their codominant Mendelian inheritance, high degree of polymorphisms, and abundance in

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polymorphisms by focusing on three loci responsible for TA biosynthesis: the first committed step to alkaloid biosynthesis ( pmt ); the branch points to the tropane alkaloids hyoscyamine and scopolamine ( trI ); and the final transformation from hyoscyamine to

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Saaidi, 1988 ; Bendiab et al., 1998 ; Majourhat et al., 2002 ; Ould Salem Mohamed et al., 2001 ). As such, analysis does not reflect precisely that polymorphisms occurred ( Al-Jibouri and Adham, 1990 ). DNA marker analysis in date palm is recently in

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genetic research in Chinese Incense-cedar using the protocol of the fast isolation by amplified fragment length polymorphism (AFLP) of sequences containing repeats ( Zane et al., 2002 ). Genomic DNA samples were extracted from dry leaf tissue, which was

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base sequences, number of amplified bands, number of polymorphic bands, and polymorphism percentages for the ornamental palms analyzed. Data analysis. Amplification profiles generated by all the different RAPD primers as well as protein bands (three

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The Leguminous Leucaena including 15 species, of which several have become pantropical as fodder, fuelwood, shade and ornamental trees. 160 collections of 12 Leucaena species, including 3 tetraploids and 9 diploids, were analyzed for six isozyme systems. Extensive inter and intraspecific variability was detected using cotyledon tissues. The uniformity of isozymic expression in 80 collections of the “common leucaena” from all over the world supported the hypothesis that it is a single self-pollinated variety. It was first distributed to the Philippines from Mexico in late 1500s, then spread worldwide. ACO polymorphism appeared to be controlled by three loci ACO1, ACO2, ACO3 and IDH by two loci IDH1, IDH2 in L. lanceolata. Peroxidase polymorphism was early shown to involve 4 loci, PX1-PX4. Polymorphism in these loci was applied to clarify phylogeny of the Leucaena ssp. and hybrids (>60 made in Hawaii), that are growing in the Waimanalo Sta. of UH.

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