Cytogenetics and RAPD Analysis of Interspecific Hybrids from the Cross ofFragaria mandschurica Staudt and F. ananassa Duch.

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (3): 597-604.

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Cytogenetics and RAPD Analysis of Interspecific Hybrids from the Cross ofFragaria mandschurica Staudt and F. ananassa Duch.

MA Hong-xiang^1*; CHEN Pei-du²;YU Gui-hong¹ ;REN L i-juan¹

(¹ Institute of Agro-biological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;²National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095,China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-25 Published:2007-06-25

Abstract

Abstract: The interspecific hybrid was obtained from the cross of Fragaria mandschurica Staudt, a
dip loid species derived from Northeast China, and F. ananassa Duch. (2n = 8x = 56) ‘Shengxing’by using
immature embryo culture technique. The hybridswere pentap loidswith poor fertility. The morphological char
acteristics of the hybridswere observed and showed that theywere intermediate between their parents in pedun
cle height and p lant height, and similar to Fragaria m andschurica in hair on peduncle and petiole. The
hybrids showed expected 35 chromosomes in somatic cells and had a meiotic chromosome association of 6.1Ⅰ
+ 10.6 Ⅱ + 2.1 Ⅲ + 0.35 Ⅳ with a few abnormal microspores occurring in tetrad phase. RAPD analysis
showed that the hybrids possessed the specific bands of two parents, and the genetic diversities were found
among the interspecific hybrid lines.

Key words: Strawberry, Fragaria mandschurica Staudt, Fragaria ananassa Duch., Interspecifichybridization, Cytogenetics, RAPD

MA Hong-xiang;CHEN Pei-du;YU Gui-hong;REN L i-juan. Cytogenetics and RAPD Analysis of Interspecific Hybrids from the Cross ofFragaria mandschurica Staudt and F. ananassa Duch.[J]. ACTA HORTICULTURAE SINICA, 2007, 34(3): 597-604.

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Cytogenetics and RAPD Analysis of Interspecific Hybrids from the Cross ofFragaria mandschurica Staudt and F. ananassa Duch.

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