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Sanzol, Javier; Herrero, M.

doi:10.1023/a:1021213905461

Cited by 43 publications

(8 citation statements)

References 23 publications

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“…Regarding the occurrence of abortion and natural thinning until the June drop, the number of fruits in the third recording time was considered as the final fruit set (Sanzol & Herroro 2002).…”

Section: Determination Of Fruit Setmentioning

confidence: 99%

Study on Pollination and Selection of the Most Suitable Pollinizers for Commercial Pear Cultivars (Pyrus communisL.) in Iran

Tatari

Ghasemi

Mousavi

et al. 2017

Journal of Horticultural Research

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The cultivated pear is an economically important fruit tree species of genus Pyrus in which often gametophytic self-incompatibility occurs. Therefore, this species need to be pollinated by cross-compatible cultivars that bloom in the same time. Selection of appropriate pollinizers for pear cultivars is very important to produce commercial yield. 'Sebri', ' Shahmiveh' and 'Natanzi' are the best commercial cultivars in Iran, but the lack of a suitable source of pollen can reduce productivity. In order to select the most suitable pollinizer for these pear cvs, an experiment was conducted in which they were considered as pollen recipients and 'Coscia', 'Bartlett' and 'Sardroud' along with 'Sebri', 'Shahmiveh' and 'Natanzi' were evaluated as pollen donors. This research was conducted as a factorial experiment in randomized complete block design for four years. Recipient and donor cultivars had almost overlapping flowering time. The flower buds on selected branches were emasculated at balloon stage and then were counted and isolated with cotton tissue bags. Pollen grains of these pollinizers were collected in the laboratory. Isolation bags were taken off from the branches and emasculated flowers were pollinated with pollen grains of listed pollinizers during receptibility of stigma. The number of pollinated flowers was counted, and branches were covered again with the bags. The results showed that for 'Sebri' the best pollinizer was 'Coscia' with 5.7% fruit set, for 'Shahmiveh' 'Bartlett' cv. with 5.8% of fruit set and for 'Natanzi', 'Shahmiveh' with 5.5% of fruit set.

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Section: Determination Of Fruit Setmentioning

confidence: 99%

Study on Pollination and Selection of the Most Suitable Pollinizers for Commercial Pear Cultivars (Pyrus communisL.) in Iran

Tatari

Ghasemi

Mousavi

et al. 2017

Journal of Horticultural Research

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“…Miranda et al (2010) suggested that cultivars of P. communis could have had a narrower than expected genetic origin. Sanzol and Herrero (2002) suggested that newly released cultivars have a direct or indirect parental relationship with important cultivars such as 'Williams'. These authors identified alleles in the Spanish cultivar 'Agua de Aranjuez' ('Blanquilla') and 'Coscia' ('Ercolini') that are also found in 'Williams'.…”

Section: Genetic and Structural Differentiationmentioning

confidence: 99%

Genetic variability and diversification process in local pear cultivars from northwestern Spain using microsatellites

Santos

Ramos‐Cabrer

Díaz-Hernández

et al. 2011

Tree Genetics & Genomes

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This is the first known large-scale molecular study of simple sequence repeats loci based on pear cultivars from the northwestern Iberian Peninsula. Most of the Spanish pear crop (one of the largest in Europe) is based on the Spanish cultivar Blanquilla and various other foreign cultivars. However, local cultivars can still be found in old orchards in northwestern Spain. Between 1978 and 1981, the Centro de Investigaciones Agrarias de Mabegondo (Xunta de Galicia) established a Germplasm Bank of local pear cultivars containing 221 accessions. In the current study, these were analysed and compared with 20 commercial cultivars of Pyrus spp. using 19 microsatellites. We identified 127 genotypes out of 221 accessions with an average of 43% clonality in this collection. Genotypes were analysed using a model-based Bayesian procedure (Structure), factorial correspondence analysis and molecular variance analysis, and Jaccard coefficients were estimated. Four reconstructed populations were identified by Structure, one related to Asian cultivars, two to French and English cultivars and one to Galician cultivars. The four identified groups of pears had evolved independently. This study explains the diversification process in pear cultivars from northwestern cultivars based on hybridization (16%), selection of triploids (38%) and the introgression of commercial cultivars in the collection (4%).

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“…The S-RNase gene is composed of five consensus conserved regions (C1, C2, C3, RC4, and C5) and the highly conserved noncanonical hexapeptide (IIWPNW); moreover, between C2 and C3 is located the hypervariable region (RHV) harboring a highly polymorphic intron. This RHV region has been largely exploited to assess the S-locus diversity in European pear by cloning and sequencing PCR products amplified with universal primers on the basis of conserved regions [6][7][8][9][10][11][12][13][14][15][16]. Sanzol [14] developed a PCR-based method for the detection of 20 S-RNase alleles in European pear by using consensus primers simultaneously amplifying a large number of alleles characterized by different intron sizes, plus a set of allele-specific primers.…”

Section: Introductionmentioning

confidence: 99%

Deciphering S-RNase Allele Patterns in Cultivated and Wild Accessions of Italian Pear Germplasm

Bennici

Guardo

Distefano

et al. 2020

Forests

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The genus Pyrus is characterized by an S-RNase-based gametophytic self-incompatibility (GSI) system, a mechanism that promotes outbreeding and prevents self-fertilization. While the S-genotype of the most widely known pear cultivars was already described, little is known on the S-allele variability within local accessions. The study was conducted on 86 accessions encompassing most of the local Sicilian varieties selected for their traits of agronomic interest and complemented with some accessions of related wild species (P. pyrifolia Nakai, P. amygdaliformis Vill.) and some national and international cultivars used as references. The employment of consensus and specific primers enabled the detection of 24 S-alleles combined in 48 S-genotypes. Results shed light on the distribution of the S-alleles among accessions, with wild species and international cultivars characterized by a high diversity and local accessions showing a more heterogeneous distribution of the S-alleles, likely reflecting a more complex history of hybridization. The S-allele distribution was largely in agreement with the genetic structure of the studied collection. In particular, the “wild” genetic background was often characterized by the same S-alleles detected in P. pyrifolia and P. amygdaliformis. The analysis of the S-allele distribution provided novel insight into the contribution of the wild and international cultivars to the genetic background of the local Sicilian or national accessions. Furthermore, these results provide information that can be readily employed by breeders for the set-up of novel mating schemes.

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Cited by 43 publications

References 23 publications

Study on Pollination and Selection of the Most Suitable Pollinizers for Commercial Pear Cultivars (Pyrus communisL.) in Iran

Study on Pollination and Selection of the Most Suitable Pollinizers for Commercial Pear Cultivars (Pyrus communisL.) in Iran

Genetic variability and diversification process in local pear cultivars from northwestern Spain using microsatellites

Deciphering S-RNase Allele Patterns in Cultivated and Wild Accessions of Italian Pear Germplasm

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