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Rafel Socias i Company, Àngel Fernández i Martí, Ossama Kodad, and José M. Alonso

almond cultivars J. Amer. Soc. Hort. Sci. 119 106 109 Kodad, O. Socias i Company, R. 2006 Pollen source effect on pollen tube growth in advanced self-compatible almond selections ( Prunus amygdalus Batsch) Adv

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Ossama Kodad, Rafel Socias i Company, Ana Sánchez, and M. Margarida Oliveira

Pollen source effect on pollen tube growth in advanced self-compatible almond selections ( Prunus amygdalus Batsch) Adv. Hort. Sci. 20 256 261 Kodad, O. Socias i Company, R. 2008 Fruit set evaluation for self

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Álvaro Fernández-Cuesta, Ossama Kodad, Rafel Socias i Company, and Leonardo Velasco

fatty acid composition in almond ( Prunus amygdalus Batsch) and its relationship with kernel quality J. Agr. Food Chem. 56 4096 4101 Kodad, O. Socias i Company, R. Prats, M.S. López-Ortiz, M.C. 2006 Variability in tocopherol concentrations in almond oil

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Ossama Kodad, José M. Alonso, María T. Espiau, Gloria Estopañán, Teresa Juan, and Rafel Socias i Company

Kodad, O. Socias i Company, R. 2008 Variability of oil content and of major fatty acid composition in almond ( Prunus amygdalus Batsch) and its relationship with kernel quality J. Agr. Food Chem. 56 4096 4101 Kodad, O. Socias i Company, R. Gracia Gómez

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Doron Holland, Irit Bar-Ya'akov, Kamel Hatib, Tuvia Albert, Ya'ir Mani, and Pinhas Spiegel-Roy

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Doron Holland, Irit Bar-Ya'akov, Kamel Hatib, and Reuven Birger

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J.L. Espada and A.J. Felipe

Group-author : R. Socias i Company

Low levels of fruit set were measured in a commercial almond [Prunus amygdalus Batsch, syn. Prunus dulcis (Mill.) D.A. Webb] orchard during 3 years. Low sets may be attributed mostly to orchard design, as cultivars are distributed in contiguous rows where pollen interchange among different cultivars is not facilitated. An appropriate orchard design and proper bee management are essential for commercial yields in self-incompatible almond cultivars.

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Nachida Ben-Njima

Group-author : R. Socias i Company

Pollen tube growth was studied in 10 almond [Prunus amygdalus Batsch, syn. P. dulcis (Mill.) D.A. Webb] selections of the Zaragoza breeding program, whose main objective is the development of self-compatible cultivars. Self-compatibility was evident in eight of the selections, as indicated by the fact that pollen tube growth was similar following self- and cross-pollination. In the other two selections, pollen tube growth differed following self- and cross-pollination, one showing self-incompatibility and the other an irregular progression of crossed pollen tubes. The importance of the style in sustaining pollen tube growth was evident, and pollen tube growth was influenced by style type.

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D. Bernad

Group-author : R. Socias i Company

Bloom evolution and flower quality were studied in 10 almond [Prunus amygdalus Batsch syn. P. dulcis (Mill.) D.A. Webb] selections of the Zaragoza breeding program. The opening of individual flowers followed a normal distribution, with deviations reflecting temperature differences during the bloom period. The first open flowers are of better quality than later ones and may contribute more to fruit set. The relative stigma–anther position reflected the possibility of natural autogamy in three of the 10 selections. Natural autogamy might allow single-cultivar orchards without the need for pollinating insects.

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Pere Arús, Carmen Olarte, Miguel Romero, and Francisco Vargas

Ten isozyme genes were studied after analyzing the variability of eight enzyme systems—glucose phosphate isomerase (GPI), phosphoglucomutase (PGM), aspartate aminotransferase (AAT), leucine aminopeptidase (LAP), 6-phosphogluconate dehydrogenase (6PGD), isocitrate dehydrogenase (IDH), shikimate dehydrogenase (SDH), and aconitase (ACO)—in the progeny of five crosses among almond [Prunus amygdalus Batsch, syn. P. dulcis (Miller) D. A. Webb] cultivars. Six of these loci were found to be located in two linkage groups, one containing four loci (Pgm-2, Gpi-2, Aat-2, and Lap-1) and two more in the other (Idh-2 and Aat-1). Genetic configurations of pairs of loci specific to segregating F1 progeny of crosses between heterozygous parents were found in our data, for which we derived the estimate of the recombination fraction and its variance. Linkage data for the gene pairs that could be estimated in various crosses were used to obtain a joint estimation of the recombination fraction.