Elements of theS-gene complex V. Interspecific cross-compatibility relationships and theory of the evolution of theS complex

Genetica ◽  
1969 ◽  
Vol 40 (1) ◽  
pp. 447-474 ◽  
Author(s):  
Kamla Kant Pandey
Keyword(s):  
Interspecific Cross ◽  
Gene Complex ◽  
Cross Compatibility ◽  
Thes Gene

Characterization of post-mating interspecific cross-compatibility in Prunus (Rosaceae)

2019 ◽  
Vol 246 ◽  
pp. 693-699 ◽  
Author(s):  
Takuya Morimoto ◽  
Yuto Kitamura ◽  
Koji Numaguchi ◽  
Takashi Akagi ◽  
Ryutaro Tao
Keyword(s):  
Interspecific Cross ◽  
Cross Compatibility

scholarly journals Characterisation and evaluation of interspecific cross-incompatibility in two Delphinium species

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ying Cheng ◽  
Wenling Guan ◽  
Fan Li
Keyword(s):  
Yunnan Province ◽  
Fruit Set ◽  
Germination Rate ◽  
Hybrid Sterility ◽  
Interspecific Cross ◽  
Cut Flowers ◽  
Hybrid Generation ◽  
Cross Compatibility ◽  
The Cross ◽  
Ornamental Traits

AbstractDelphinium yunnanense is an endemic species in the Yunnan Province of China, while Delphinium elatum ‘Guardian Blue’ is widespread as cut flowers in the world. They all bloom attractive blue flowers, which are a crucial ornamental trait for floriculture. In this experiment, the cross-compatibility between D. yunnanense and D. elatum was characterised and evaluated. The results showed that a strong cross-incompatibility was observed in D. yunnanense × D. elatum, resulting in hybrid sterility. The F1 hybrid generation produced neither fruits nor seeds. The cross-incompatibility of the hybrids resulted from the disturbed structure of the pollen tubes penetrating pistil style and callose deposits on stigma and in style. Moreover, the germination rate of D. elatum × D. yunnanense F1 seed was lower than their own allogamic crosses, although there was no difference in fruit set rate. The results confirmed the cross-incompatibility between D. yunnanense and D. elatum, suggesting that D. elatum is more suitable as a maternal parent for hybridisation breeding. Our study characterised and evaluated the interspecific cross-compatibility through the pollen–stigma interaction and the reproductive system in Delphinium, which could provide the basis for the development and utilisation of potential ornamental traits in Delphinium.

scholarly journals Interspecific Cross-compatibility in Fagopyrum according to Pollen Tube Growth.

1994 ◽  
Vol 44 (3) ◽  
pp. 307-314 ◽  
Author(s):  
Tamaki Hirose ◽  
Akio Ujihara ◽  
Hiromi Kitabayashi ◽  
Mineo Minami
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Interspecific Cross ◽  
Tube Growth ◽  
Cross Compatibility

Cross-compatibility of Interspecific Cross in Tobacco

2012 ◽  
Vol 34 (5) ◽  
pp. 459
Author(s):  
Heng YAO ◽  
Yun-Ye ZHENG ◽  
Wen-Long SUO ◽  
Wen-Guang MA
Keyword(s):  
Interspecific Cross ◽  
Cross Compatibility

Studies on cross compatibility in interspecific crosses of Vigna radiata × Vigna umbellata species

2018 ◽  
Author(s):  
T. Basavaraja ◽  
Niranjana Murthy ◽  
L. Vijay Kumar ◽  
K. Mallikarjun
Keyword(s):  
Interspecific Hybrid ◽  
Vigna Radiata ◽  
Interspecific Cross ◽  
Germination Percentage ◽  
Interspecific Crosses ◽  
Lower Hybrid ◽  
Hybrid Breakdown ◽  
Rice Bean ◽  
Vigna Umbellata ◽  
Cross Compatibility

The present study was undertaken to study the crossability barriers in interspecific crosses of Vigna radiata × Vigna umbellata. The basic materials of this experiment comprising of five mungbean MYMV Susceptible genotypes and five rice bean MYMV resistant genotypes. Interspecific crosses were attempted by utilizing rice bean genotypes as male parents and mungbean genotypes as female parents. The successful pod set was observed on 12 crosses out of 25 interspecific crosses of Vigna radiata and Vigna umbellata. The results revealed that highest crossability per cent was recorded in the crosses Yellowmung × KBR-1 (17.30 %), DGGV-2× RBL-35 (16.0%), Selection-4×KBR-1 (11.80%), Chinamung × KBR-1 (11.0%) and BGS-9× RBL-35 (10.20%) which were considered as successful crosses. This suggests that the parents of these four interspecific cross combinations may be ideal for transfer of useful genes across the two divergent species and to broaden the genetic base of interspecific hybrid and further, the existence of moderate hybrid pollen fertility (78.24%) coupled with moderate seed germination percentage (36.84%), lower hybrid lethality (21.43%) and lower hybrid breakdown (7.14%) was observed in Chinamung × KBR-1 followed by cross Selection-4 ×KBR-1. In the present investigation prominent observation noticed are strong pre-fertilization as well as post fertilization barriers were present in the cross between V. radiata and V. umbellata, while, growth and lethality of interspecific hybrid seedlings were influenced by the genotypes of both the parental species.

scholarly journals Crop wild phylorelatives (CWPs): phylogenetic distance, cytogenetic compatibility and breeding system data enable estimation of crop wild relative gene pool classification

2020 ◽  
Vol 195 (1) ◽  
pp. 1-33
Author(s):  
Juan Viruel ◽  
Michael B Kantar ◽  
Roberta Gargiulo ◽  
Peri Hesketh-Prichard ◽  
Nathan Leong ◽  
...  
Keyword(s):  
Food Security ◽  
Genetic Resources ◽  
Gene Pool ◽  
Sequence Data ◽  
Conservation Status ◽  
Interspecific Cross ◽  
Breeding Systems ◽  
Basic Knowledge ◽  
Phylogenetic Distance ◽  
Cross Compatibility

Abstract Enabling food security requires access to a broad range of genetic resources to facilitate crop breeding. This need is increased in a climate change scenario, which will require the production of novel crops adapted to new conditions. However, many major crops have reduced genetic diversity due to the genetic bottlenecks that they have experienced during their domestication and subsequent breeding. Crop wild relatives (CWRs) remain underexploited in plant breeding programmes, mostly because of the lack of knowledge of their cross-compatibility with crops. In this study, we use a combination of phylogenetic distance metrics, cytogenetic compatibility data (e.g. chromosome number and ploidy) and information about breeding systems to predict interspecific cross-compatibility between crop and wild species and hence identify crop wild phylorelatives (CWPs) (i.e. CWRs that can breed with the crop). We illustrate this concept using cultivated asparagus as a model by integrating previous cross-compatibility knowledge and CWR classifications into a phylogenetic framework reconstructed using available sequence data. Our approach aims to reinforce the use of the gene pool classification system of CWRs of Harlan and De Wet, since CWPs are estimated to belong to the secondary gene pool and non-CWPs to the tertiary gene pool. Identifying CWPs unlocks novel uses of genetic resources, although such data are available for less than half of the known CWRs (43.4% with sequence data and 32.5% with known ploidy). The need to conserve plants that provide or enhance provisioning ecosystem services, including CWRs, is clear if we are to rise to the global challenge of ensuring food security for all. However, basic knowledge about their conservation status is still lacking, with only c. 20% of CWRs assigned an IUCN red list assessment, 23% of which are Data Deficient (DD). Using the CWP classification presented here to define CWRs will contribute towards helping to prioritize CWRs for IUCN assessments and, where prioritised, conservation.

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