Comparison of Morphological Characteristics and Determination of Different Patterns for Rubber Particles in Dandelion and Different Rubber Grass Varieties.
Comparison of Morphological Characteristics and Determination of Different Patterns for Rubber Particles in Dandelion and Different Rubber Grass Varieties.
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DOI：
10.3390/plants9111561
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发表时间：
2020-11-13
期刊：
影响因子：
--
通讯作者：
Xie Q
中科院分区：
文献类型：
--
作者：
Yuan B;Ding G;Ma J;Wang L;Yu L;Ruan X;Zhang X;Zhang W;Wang X;Xie Q
俄罗斯蒲公英（TKS）是一种很有前途的天然橡胶替代作物。然而，它很容易与其他蒲公英混淆。在本研究中，我们系统地比较了不同TKS品种和普通蒲公英Taraxacum officinale （TO）的形态特征。我们的研究结果表明，TKS和TO在形态学上存在一些明显的差异。TO叶呈羽状，叶缘锯齿状，基部楔形，而TKS叶较为楔形，叶缘近乎光滑圆润。TO和TKS花蕾的外苞片有明显的差异。TKS苞片倒披针形，先端钝，边缘光滑深波状，其花蕾外层与面苞总苞片向内弯折形成一定角度。TKS自交不亲和，种子呈纺锤状瘦果，直立饱满。在许多TKS组织中可以检测到大量的乳汁细胞和橡胶颗粒，TKS干燥的根含有高含量的天然橡胶。乳汁管细胞和橡胶颗粒只能在TKS的静脉、茎和根中检测到。统计结果还表明，乳汁管细胞数和橡胶颗粒数与橡胶树根中橡胶含量呈正相关。这些形态特征可以帮助我们很容易地将TKS与普通蒲公英区分开来，并大致估计不同品种TKS根系中的橡胶含量，为今后TKS的选育提供依据。
Russian dandelion Taraxacum kok-saghyz (TKS) is one promising alternative crop for natural rubber production. However, it is easily confused with other dandelions. In this study, we performed a systematical comparison of the morphological characteristics for different TKS varieties and common dandelion Taraxacum officinale (TO). Our results demonstrated that several obvious differences in morphology can be found between TKS and TO. TO leaf is a pinnate shape, its margin is heavily jagged and its base is cuneate, but TKS leaf is more cuneate and its leaf margin is nearly smooth and round. There are obvious differences for the outer bracts of TO and TKS flower buds. TKS bracts are oblanceolate, apex obtuse, margin smooth and sinuate, and its outer layer of flower buds and faceplate involucre sepal is buckled inward to form a certain angle. TKS is self-incompatible, and its seeds are spindle-shaped achene and show upright plumpness. A large amount of laticifer cells and rubber particles can be detected from many TKS tissues, and dry roots of TKS contain high contents of natural rubber. Laticifer cells and rubber particles can only be examined in the vein, stem, and roots of TKS. Our statical results also revealed that the numbers of laticifer cells and rubber particles have a positive relationship with the rubber content in TKS roots. These morphological features can help us to easily distinguish TKS from common dandelion and approximately estimate the rubber content in the roots of different TKS varieties for TKS breeding in future.
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DOI：
10.13057/biodiv/d170262
发表时间：
2016-01-01
期刊：
Biodiversitas: Journal of Biological Diversity
影响因子：
--
作者：
Cornish, K.;Kopicky, S. L.;Streeter, J. G.
通讯作者：
Streeter, J. G.
影响因子：
5.9
作者：
Arias, Marina;Herrero, Javier;Ritter, Enrique
通讯作者：
Ritter, Enrique
影响因子：
4.2
作者：
Hao, BZ;Wu, JL
通讯作者：
Wu, JL
影响因子：
27.5
作者：
Liu, Jin;Shi, Cong;Gao, Li-Zhi
通讯作者：
Gao, Li-Zhi
影响因子：
--
作者：
ABBE, LB
通讯作者：
ABBE, LB