Yue Wang^1,#, Xiujie Li^2,#, Yusen Wu², Zhonghui Cai¹, Bo Li², Zhaosen Xie^1,*

Phyton-International Journal of Experimental Botany, Vol.92, No.6, pp. 1859-1871, 2023, DOI:10.32604/phyton.2023.027067

Abstract It is generally agreed that many Vitis vinifera L. cultivars are self-fertile, where self-pollination often occurs before capfall in a process called cleistogamy. Therefore, it is difficult to identify the right time to remove stamens before self-pollination during the cross-breeding of grape. For this paper, we observed the process of grape flowering and measured the pollen viability and stigma receptivity of grape flowers of ‘Shine Muscat’ in order to identify the starting time of self-pollination before capfall and to provide useful information for improving the efficiency of cross-breeding. The results demonstrate that the anther is not cracked during the visible… More >

Han Lei^1,#, Junlin Li^2,#, Zhizhong Song^1,3,*

Phyton-International Journal of Experimental Botany, Vol.91, No.11, pp. 2519-2536, 2022, DOI:10.32604/phyton.2022.021268

Abstract Potassium (K⁺) is an essential macronutrient for plants to maintain normal growth and development. Shaker-like K⁺ channels and HAK/KUP/KT transporters are critical components in the K⁺ acquisition and translocation. In this study, we identified 9 Shaker-like K⁺ channel (VvK) and 18 HAK/KUP/KT transporter (VvKUP) genes in grape, which were renamed according to their distributions in the genome and relative linear orders among the distinct chromosomes. Similar structure organizations were found within each group according to the exon/intron structure and protein motif analysis. Chromosomal distribution analysis showed that 9 VvK genes and 18 VvKUP genes were unevenly distributed on 7 or… More >

Murad Awad¹, Photini V. Mylona², Alexios N. Polidoros^1,*

Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 905-923, 2020, DOI:10.32604/phyton.2020.011235

Abstract Discrimination among grapevine varieties based on quantitative traits, such as flowering, veraison and ripening dates is crucial for variety selection in the context of climate change and in breeding programs. These traits are under complex genetic control for which 6 linked SSR loci (VVS2, VVIn16, VMC7G3, VrZAG29, VMC5G7, and VVIB23) have been identified. Using these markers in HRM-PCR analysis, we assessed genetic diversity among a large collection of 192 grapevine varieties. The grapevine germplasm used encompasses the majority of Greek vineyard with 181 varieties, 3 prominent foreign varieties and 11 varieties of Palestinian origin. The SSR markers used were highly… More >