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Juan Chen, Nianhe Xia, Xiaoming Wang, Richard C. Beeson Jr. and Jianjun Chen

, karyotypes have only been described in 36 entities ( Table 1 ), of which some controversies remain in L. japonica . As listed in Table 1 ( Denda et al., 2007 ; Guo et al., 1993 ; Li et al., 2009 ; Wang and Wang, 2005 ; Yan et al., 2014 ; Yang et al

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Min Deng, Jianjun Chen, Richard J. Henny and Qiansheng Li

nation in croton production ( Brown, 1995 ). However, there is no information regarding the cytology of crotons cultivated in Florida. The objectives of this study were to examine the chromosome number and karyotype of selected crotons cultivated in

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Chao Yu, Le Luo, Hui-tang Pan, Yun-ji Sui, Run-hua Guo, Jin-yao Wang and Qi-xiang Zhang

off from one another; however, the rose breeder who confines his or her hybridization to one ploidy group of species or botanical varieties will find his or her path smoothed and his or her aims more quickly achieved ( Percy, 1964 ). Karyotype analysis

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Guangxin Liu, Xiaoling Zhang, Yue Lan, Haoyang Xin, Fengrong Hu, Zhuhua Wu, Jisen Shi and Mengli Xi

show the same basic chromosome number ( x = 12), similar karyotype features, and a very large genome size ( Zonneveld et al., 2005 ). Karyotype characteristics for most Lilium species have been examined ( Stewart, 1947 ), and two large metacentric

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Akira Kitajima, Atsu Yamasaki, Tsuyoshi Habu, Bannarat Preedasuttijit and Kojiro Hasegawa

; Garcia et al., 1999 ; Ruiz and Asins, 2003 ; Sankar and Moore, 2001 ). It is important to confirm the correlation of linkage group with each chromosome. For chromosome mapping, the identification of each chromosome and detailed karyotyping techniques

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Yu-Chu Chang, Chou-Tou Shii and Mei-Chu Chung

chromosome number and karyotypes, posing a considerable challenge in studying their phylogenetic relationships ( Kurita and Hsu, 1998 ). In natural habitats, interspecific hybridization is frequent and has been proven to be an important mode of speciation in

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Luping Qu, Xiping Wang, Eatherley Hood, Meihua Wang and Richard Scalzo

Chromosome karyotypes of the most commonly cultivated and medicinally used Echinacea taxa, E. angustifolia DC. var. angustifolia and E. purpurea (L.) Moench., were analyzed. The chromosomes of both taxa are medium in length, ranging from 4.12 to 5.83 μm in E. angustifolia var. angustifolia and 3.99 to 6.08 μm in E. purpurea. No abrupt length changes in the chromosomes were noted. The karyotypes of the two species are generally similar, but a distinguishable feature exists in one pair of chromosomes. The centromere of chromosome pair 10 is subterminally located in E. purpurea, but terminally located in E. angustifolia var. angustifolia, which can be readily recognized in mitotic metaphase cell plates. This finding may provide useful information for Echinacea evolutionary, genetic, and breeding studies.

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Guangxin Liu, Yue Lan, Haoyang Xin, Fengrong Hu, Zhuhua Wu, Jisen Shi and Mengli Xi

(2011) and Liu et al. (2010) both analyzed the karyotype of L. rosthornii , their results were markedly different. Qing proposed that the karyotype of L. rosthornii was type 3A [length ratio of the longest chromosome to the shortest chromosome (Lt

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Jessica Gaus Barb, Dennis J. Werner and Shyamalrau P. Tallury

absolute genome size estimate for this species have not been described. The objectives of this work were to: 1) prepare a karyotype; 2) characterize the meiotic behavior of diploid, triploid, and tetraploid accessions of Stokesia laevis , including ‘Omega

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Patricia Rustanius, A. Hang, H.G. Hughes and T. Tsuchiya

Five color types of Alstroemeria ligtu Linn hybrids from one seed source were examined cytogenetically. The somatic chromosome numbers were all 2n = 2x = 16. Karyotype analysis revealed that all five plants had the same chromosome constitution. Chromosome pairs 2,3,5, and 8 had satellites. Chromosome complements of the A. ligtu hybrid were unique in that they contained two pairs of satellite metacentric chromosomes that were not found in any Alstroemeria cultivars.