Dataset Information

Aspidistradaibuensis var. longkiauensis, a new variety of Aspidistra (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

ABSTRACT: Aspidistra Ker Gawl. is one of the the most diverse and fastest-growing genera of angiosperm. Most Aspidistra species have been discovered in a limited area or a single site through morphological comparison. Because of the lack of population studies, morphological variation within species and the boundaries of some species remain unclear. In recent years, combining genetic and morphological markers has become a powerful approach for species delimitation. In this study, we performed population sampling and integrated morphometrics and microsatellite genetic diversity analyses to determine the species diversity of Aspidistra in Taiwan. We identified three species, namely Aspidistraattenuata Hayata; A.daibuensisHayatavar.daibuensis; A.mushaensisHayatavar.mushaensis; and reduced A.longiconnectiva C.T.Lu, K.C.Chuang & J.C.Wang to the variety level, and described a new variety, A.daibuensisHayatavar.longkiauensis. The description, diagnosis, distribution, and photographs of this new variety as well as a key to the known Taiwanese Aspidistra are provided.

SUBMITTER: Lu CT

PROVIDER: S-EPMC10194778 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Aspidistradaibuensis var. longkiauensis, a new variety of Aspidistra (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

Lu Chang-Tse CT Yang Ming-Jen MJ Luo Min-Xin MX Wang Jenn-Che JC

PhytoKeys 20230322

Aspidistra Ker Gawl. is one of the the most diverse and fastest-growing genera of angiosperm. Most Aspidistra species have been discovered in a limited area or a single site through morphological comparison. Because of the lack of population studies, morphological variation within species and the boundaries of some species remain unclear. In recent years, combining genetic and morphological markers has become a powerful approach for species delimitation. In this study, we performed ...[more]

PMID: 37215050

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Project description:BackgroundTunisia is considered a secondary center of diversification of durum wheat and has a large number of abandoned old local landraces. An accurate investigation and characterization of the morphological and genetic features of these landraces would allow their rehabilitation and utilization in wheat breeding programs. Here, we investigated a diverse collection of 304 local accessions of durum wheat collected from five regions and three climate stages of central and southern Tunisia.ResultsDurum wheat accessions were morphologically characterized using 12 spike- and grain-related traits. A mean Shannon-Weaver index (H') of 0.80 was obtained, indicating high level of polymorphism among accessions. Based on these traits, 11 local landraces including Mahmoudi, Azizi, Jneh Khotifa, Mekki, Biskri, Taganrog, Biada, Badri, Richi, Roussia and Souri were identified. Spike length (H' = 0.98), spike shape (H' = 0.86), grain size (H' = 0.94), grain shape (H' = 0.87) and grain color (H' = 0.86) were the most polymorphic morphological traits. The genetic diversity of these accessions was assessed using 10 simple sequence repeat (SSR) markers, with a polymorphic information content (PIC) of 0.69. Levels of genetic diversity were generally high (I = 0.62; He = 0.35). In addition, population structure analysis revealed 11 genetic groups, which were significantly correlated with the morphological characterization. Analysis of molecular variance (AMOVA) showed high genetic variation within regions (81%) and within genetic groups (41%), reflecting a considerable amount of admixture between landraces. The moderate (19%) and high (59%) levels of genetic variation detected among regions and among genetic groups, respectively, highlighted the selection practices of farmers. Furthermore, Mahmoudi accessions showed significant variation in spike density between central Tunisia (compact spikes) and southern Tunisia (loose spikes with open glume), may indicate an adaptation to high temperature in the south.ConclusionOverall, this study demonstrates the genetic richness of local durum wheat germplasm for better in situ and ex situ conservation and for the subsequent use of these accessions in wheat breeding programs.

Dataset Information

Aspidistradaibuensis var. longkiauensis, a new variety of Aspidistra (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

Publications

<i>Aspidistradaibuensis</i> var. <i>longkiauensis</i>, a new variety of <i>Aspidistra</i> (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

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Dataset Information

Aspidistradaibuensis var. longkiauensis, a new variety of Aspidistra (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

Publications

﻿<i>Aspidistradaibuensis</i> var. <i>longkiauensis</i>, a new variety of <i>Aspidistra</i> (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

<i>Aspidistradaibuensis</i> var. <i>longkiauensis</i>, a new variety of <i>Aspidistra</i> (Asparagaceae) from Taiwan, identified through morphological and genetic analyses.