Germplasm Conservation and Genetic Improvement in Tropical and Subtropical Crops

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 620

Special Issue Editors

Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya 572024, China
Interests: plant development; plant biotechnology; plant; genetics

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Guest Editor
National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology/Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya 572024, China
Interests: sugarcane; sugarcane breeding; sugarcane smut

Special Issue Information

Dear Colleagues,

Tropical and subtropical climates cover over half of the world and create diverse plant species. Many of these have been planted for food supply and industrial applications, including rice, maize, rapeseed, cassava, sugarcane, rubber tree, banana, mango, coffee, pineapple, sisal, etc. However, global climate change has brought severe challenges for the plantation and production of tropical and subtropical crops. It is of great importance to explore adaptive traits in germplasms, with the aim of breeding excellent varieties for extreme weather. During the past decade, the research progress of tropical and subtropical crops has significantly accelerated, due to the rapid development of advanced technologies, such as omics and gene editing.

This Special Issue will focus on “Germplasm Conservation and Genetic Improvement in Tropical and Subtropical Crops”. We welcome novel reviews, research, opinions, protocols, etc., covering all topics related to germplasm evaluation and conservation, including phenotyping, diversity, domestication, omics, in vitro propagation, and the physiological and biochemical characteristics of tropical and subtropical crops. In addition, the aim of this Special Issue is also to gather information concerning genetic improvement in relation to individual gene studies, cultivars exploited for commercial applications, breeding, and methods and applications of genetic transformation

Dr. Xing Huang
Dr. Qibin Wu
Guest Editors

Manuscript Submission Information

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Keywords

  • tropical and subtropical crops
  • germplasm
  • genetic improvement
  • biotechnology
  • omics technology
  • adaptive traits
  • climate change

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Published Papers (1 paper)

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Research

11 pages, 3087 KiB  
Article
Population Structure and Genetic Diversity of Agave Germplasms in China
by Xiaoli Hu, Yubo Li, Shibei Tan, Lisha Chen, Dietram Samson Mkapa, Chen Lin, Qingqing Liu, Gang Jin, Tao Chen, Xu Qin, Kexian Yi and Xing Huang
Agronomy 2025, 15(3), 722; https://doi.org/10.3390/agronomy15030722 - 17 Mar 2025
Viewed by 345
Abstract
Agave hybrid cultivar 11,648 has been planted for sisal fiber production in China since the 1960s. However, little is known about the population structure and genetic diversity of agave germplasms in China. Therefore, we developed a group of core SNP markers to evaluate [...] Read more.
Agave hybrid cultivar 11,648 has been planted for sisal fiber production in China since the 1960s. However, little is known about the population structure and genetic diversity of agave germplasms in China. Therefore, we developed a group of core SNP markers to evaluate the population structure and genetic diversity of 125 agave germplasms in China, including 20 cultivars, 14 breeding lines, and 89 transplanted resources from different areas. Cost-effective amplicon sequencing technology was used to identify genetic variants. The results grouped most cultivars and breeding lines together, which indicated that local agave breeding programs aimed to improve fiber and disease-resistance traits. These breeding programs have reduced genetic diversity, even with the gene flows from other Agave species. The neighbor-joining phylogenetic tree revealed the relationships between A. H11648 and its parents. The phylogenetic relationship between A. sisalana and A. amanuensis is doubtful, even if they are considered heterotypic synonyms. The 11 agave germplasms introduced from Mexico suggest the abundant diversity of agave germplasms in Mexico, which is also the source of agave germplasms in China. This study provides a sketch map for agave germplasms in China, which will benefit future studies related to population genetics and breeding works of agave. Full article
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