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

Characterization of the Spikelet Number per Panicle QTL qSPP7 Using a Nearly Isogenic Line Derived from an Interspecific Cross in Rice

2019 ◽  
Vol 7 (3) ◽  
pp. 245-256
Author(s):  
Ngoc Ha Luong ◽  
Yun-A Jeon ◽  
Kyu-Chan Shim ◽  
Sunha Kim ◽  
Hyun-Sook Lee ◽  
...  
Keyword(s):  
Interspecific Cross ◽  
Isogenic Line ◽  
Spikelet Number

scholarly journals Hierarchical and optimization methods for the characterization of tomato genotypes

2019 ◽  
Vol 23 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Joicy V. M. Peixoto ◽  
Rafaela S. de Almeida ◽  
Jaine P. R. da Rocha ◽  
Gabriel M. Maciel ◽  
Nádya C. Santos ◽  
...  
Keyword(s):  
Block Design ◽  
Interspecific Cross ◽  
Optimization Methods ◽  
Leaf Miner ◽  
Wild Accession ◽  
Recurrent Parent ◽  
Commercial Line ◽  
Different Levels ◽  
Tomato Genotypes

ABSTRACT The correct characterization of germplasm banks is fundamental for breeders to succeed in breeding programs. Several studies have sought to obtain genotypes with resistance to pests. However, there is no consensus about which methodology is the most appropriate to characterize a germplasm bank of tomato with different levels of resistance to pests. The objective of this study was to compare methods of multivariate analysis for the evaluation of genetic diversity in tomato genotypes with different levels of resistance to pests. The experiments were conducted at the Vegetable Experimental Station of the Federal University of Uberlândia - Monte Carmelo campus (18º 42’ 43.19” South latitude and 47º 29’ 55.8” West longitude, 873 m altitude), in the period from April 2013 to November 2016. Sixteen genotypes were evaluated from the interspecific cross between LA-716 (S. pennellii) versus pre-commercial line (UFU-057) followed by backcrossing and self-fertilization, along with the pre-commercial line UFU-057 (recurrent parent) Santa Clara and the wild accession S. pennellii (donor genitor). The contents of acylsugar, foliar trichomes, South American tomato pinworm and leaf miner repellency tests were analyzed. The experimental design was the randomized block design totaling 76 plots (19 genotypes x 4 blocks). It was concluded that there was genetic variability among the evaluated genotypes. The method of graphic dispersion by principal components revealed a greater power of discrimination. Genotypes UFU-057F2RC27#4.3, UFU-057F2RC28#2.2 and UFU-057F2RC27#4.7 contain the highest levels of acylsugar, resistance to Liriomyza spp. and T. absoluta.

scholarly journals Compatibility of Aerial and Terrestrial LiDAR for Quantifying Forest Structural Diversity

2020 ◽  
Author(s):  
Elizabeth A. LaRue ◽  
Franklin W. Wagner ◽  
Songlin Fei ◽  
Jeff W. Atkins ◽  
Robert T. Fahey ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Structural Diversity ◽  
Structural Features ◽  
Ecosystem Functions ◽  
Terrestrial Lidar ◽  
Forest Sites ◽  
Cross Compatibility ◽  
Eastern Usa ◽  
Diversity Metrics

Structural diversity is a key feature of forest ecosystems that influences ecosystem functions from local to macroscales. The ability to measure structural diversity in forests with varying ecological composition and management history can improve the understanding of linkages between forest structure and ecosystem functioning. Terrestrial LiDAR has often been used to provide a detailed characterization of structural diversity at local scales, but it is largely unknown whether these same structural features are detectable using aerial LiDAR data that are available across larger spatial scales. We used univariate and multivariate analyses to quantify cross-compatibility of structural diversity metrics from terrestrial versus aerial LiDAR in seven National Ecological Observatory Network sites across the eastern USA. We found strong univariate agreement between terrestrial and aerial LiDAR metrics of canopy height, openness, internal heterogeneity, and leaf area, but found marginal agreement between metrics that describe heterogeneity of the outer most layer of the canopy. Terrestrial and aerial LiDAR both demonstrated the ability to distinguish forest sites from structural diversity metrics in multivariate space, but terrestrial LiDAR was able to resolve finer-scale detail within sites. Our findings indicate that aerial LiDAR can be of use in quantifying broad-scale variation in structural diversity across macroscales.

Characterization of the interspecific cross Cicer anetinum L. x C. judaicum (Boiss)

1995 ◽  
Vol 114 (6) ◽  
pp. 549-551 ◽  
Author(s):  
M. M. Verma ◽  
Ravi ◽  
J. S. Sandhu
Keyword(s):  
Interspecific Cross

scholarly journals Compatibility of Aerial and Terrestrial LiDAR for Quantifying Forest Structural Diversity

2020 ◽  
Vol 12 (9) ◽  
pp. 1407 ◽  
Author(s):  
Elizabeth A. LaRue ◽  
Franklin W. Wagner ◽  
Songlin Fei ◽  
Jeff W. Atkins ◽  
Robert T. Fahey ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Structural Diversity ◽  
Structural Features ◽  
Ecosystem Functions ◽  
Terrestrial Lidar ◽  
Forest Sites ◽  
Cross Compatibility ◽  
Eastern Usa ◽  
Diversity Metrics

Structural diversity is a key feature of forest ecosystems that influences ecosystem functions from local to macroscales. The ability to measure structural diversity in forests with varying ecological composition and management history can improve the understanding of linkages between forest structure and ecosystem functioning. Terrestrial LiDAR has often been used to provide a detailed characterization of structural diversity at local scales, but it is largely unknown whether these same structural features are detectable using aerial LiDAR data that are available across larger spatial scales. We used univariate and multivariate analyses to quantify cross-compatibility of structural diversity metrics from terrestrial versus aerial LiDAR in seven National Ecological Observatory Network sites across the eastern USA. We found strong univariate agreement between terrestrial and aerial LiDAR metrics of canopy height, openness, internal heterogeneity, and leaf area, but found marginal agreement between metrics that described heterogeneity of the outermost layer of the canopy. Terrestrial and aerial LiDAR both demonstrated the ability to distinguish forest sites from structural diversity metrics in multivariate space, but terrestrial LiDAR was able to resolve finer-scale detail within sites. Our findings indicated that aerial LiDAR could be of use in quantifying broad-scale variation in structural diversity across macroscales.

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.

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