Limits...
A Homoploid Hybrid Between Wild Vigna Species Found in a Limestone Karst.

Takahashi Y, Iseki K, Kitazawa K, Muto C, Somta P, Irie K, Naito K, Tomooka N - Front Plant Sci (2015)

Bottom Line: Genus Vigna comprise several domesticated species including cowpea and mungbean, and diverse wild species.We found an introgressive hybrid population derived from two wild species, Vigna umbellata and Vigna exilis, in Ratchaburi district, Thailand.We found the hybrid acquired vigorous growth from V. umbellata and drought tolerance plus early flowering from V. exilis, and thus has taken over some habitats of V. exilis in limestone karsts.

View Article: PubMed Central - PubMed

Affiliation: Genetic Resources Center, National Institute of Agrobiological Sciences Tsukuba, Japan.

ABSTRACT
Genus Vigna comprise several domesticated species including cowpea and mungbean, and diverse wild species. We found an introgressive hybrid population derived from two wild species, Vigna umbellata and Vigna exilis, in Ratchaburi district, Thailand. The hybrid was morphologically similar to V. umbellata but habituated in a limestone rock mountain, which is usually dominated by V. exilis. Analyzing simple sequence repeat loci indicated the hybrid has undergone at least one round of backcross by V. umbellata. We found the hybrid acquired vigorous growth from V. umbellata and drought tolerance plus early flowering from V. exilis, and thus has taken over some habitats of V. exilis in limestone karsts. Given the wide crossability of V. umbellata, the hybrid can be a valuable genetic resource to improve drought tolerance of some domesticated species.

No MeSH data available.


Morphology of V. umbellata, V. exilis and the unidentified accession.
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Figure 2: Morphology of V. umbellata, V. exilis and the unidentified accession.

Mentions: In 1999, we explored Kanchanaburi district and Ratchaburi district in Thailand for V. exilis. We found, in addition to V. exilis, a Vigna population at the foot of a limestone rock mountain near Wat Rat Singkhon (Figure 1C). It looked similar to V. umbellata, but it was growing on limestone rocks where V. umbellata had never been found. We collected seeds of V. exilis (JP205884) and the Vigna plants (JP210644) that we recored as V. umbellata, since, the seed morphology was exactly the same as V. umbellata (see Figure 2; Table 1).


A Homoploid Hybrid Between Wild Vigna Species Found in a Limestone Karst.

Takahashi Y, Iseki K, Kitazawa K, Muto C, Somta P, Irie K, Naito K, Tomooka N - Front Plant Sci (2015)

Morphology of V. umbellata, V. exilis and the unidentified accession.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664699&req=5

Figure 2: Morphology of V. umbellata, V. exilis and the unidentified accession.
Mentions: In 1999, we explored Kanchanaburi district and Ratchaburi district in Thailand for V. exilis. We found, in addition to V. exilis, a Vigna population at the foot of a limestone rock mountain near Wat Rat Singkhon (Figure 1C). It looked similar to V. umbellata, but it was growing on limestone rocks where V. umbellata had never been found. We collected seeds of V. exilis (JP205884) and the Vigna plants (JP210644) that we recored as V. umbellata, since, the seed morphology was exactly the same as V. umbellata (see Figure 2; Table 1).

Bottom Line: Genus Vigna comprise several domesticated species including cowpea and mungbean, and diverse wild species.We found an introgressive hybrid population derived from two wild species, Vigna umbellata and Vigna exilis, in Ratchaburi district, Thailand.We found the hybrid acquired vigorous growth from V. umbellata and drought tolerance plus early flowering from V. exilis, and thus has taken over some habitats of V. exilis in limestone karsts.

View Article: PubMed Central - PubMed

Affiliation: Genetic Resources Center, National Institute of Agrobiological Sciences Tsukuba, Japan.

ABSTRACT
Genus Vigna comprise several domesticated species including cowpea and mungbean, and diverse wild species. We found an introgressive hybrid population derived from two wild species, Vigna umbellata and Vigna exilis, in Ratchaburi district, Thailand. The hybrid was morphologically similar to V. umbellata but habituated in a limestone rock mountain, which is usually dominated by V. exilis. Analyzing simple sequence repeat loci indicated the hybrid has undergone at least one round of backcross by V. umbellata. We found the hybrid acquired vigorous growth from V. umbellata and drought tolerance plus early flowering from V. exilis, and thus has taken over some habitats of V. exilis in limestone karsts. Given the wide crossability of V. umbellata, the hybrid can be a valuable genetic resource to improve drought tolerance of some domesticated species.

No MeSH data available.