Relationship between nuclear DNA content and speciation inAlysicarpus

Abstract

-4C nuclear DNA contents were determined in 11 collections of Alysicarpus Neck. representing 9 species and 3 varieties. The 4C nuclear DNA contents varied from 9.225 to 13.194 picograms. A clustering of DNA values were observed in the species and varieties belonging to different sub-genera. A. belgaumensis which has a higher chromosome number of 2n = 22 showed the maximum DNA content as compared to the rest of the species and varieties which have chromosome number 2n = 16. Per-chromosome DNA amounts showed that A. belgaumensis has more affinity to members of Microcalycinae. Observations on the DNA contents indicated that the sub-genus Desmodiastrum may have originated from a common ancestor as Microcalycinae and Macrocalycinae or from some species of Microcalycinae by aneuploidy without increase in per-chromosome DNA content. The development of Macrocalycinae seems to be associated with increase in perchromosome DNA content. This is in agreement with PRAIN's classification of the genus as consisting of 3 sub-genera and members of Desmodiastrum as belonging to the genus Alysicarpus rather than Desmodium.

Effect of seeding rate on plant performance of Alycicarpus ovalifolius under rain-fed in Semi-arid zone, Sudan

“…Three Alysicarpus species, A. bupleurifolius, A. ovalifolius and A. vaginalis are known to occur in the Americas [2], where they are not native. The introduction of plants of these species is usually intentional, due to their use as forage crops [6,7,8], and secondarily also because of their medicinal properties, especially for treating wounds and fractures [2].…”

Alysicarpus ovalifolius (Fabaceae, Desmodieae), a new record for the flora of Brazil

“…(Fabaceae, subfamily Faboideae) includes ca. 34 species native to the Old World Tropics (Huang & Huang 1987, Endo & Ohashi 1990, John & Thengane 1994, Pedley 2001, Huang & Ohashi 2010, Torres-Colín et al 2011, and is most diversifi ed in southern Asia, especially India (Chavan & Sardesai 2012, Chavan et al 2013. This genus is part of tribe Desmodieae, which includes ca.…”

“…(Linné 1753:746;Candolle 1825:353), are known to occur in the Americas (Huang & Ohashi 2010), where they are not native. The introduction of plants of these species is usually intentional, due to their use as forage crops (Gramshaw et al 1987, John & Thengane 1994, Tobita et al 2011, and secondarily also because of their medicinal properties, especially for treating wounds and fractures (Huang & Ohashi 2010). However, these Alysicarpus species have also raised conservation concerns, as they can be considered potentially invasive species (Cowie & Werner 1993, Sánchez-Blanco et al 2012.…”