RECONSTITUTION OF Fragaria X Ananassa 3· FRUIT CHEMICAL CHARACTERISTICS AND THEIR HETEROSIS AND HYBRID FINGERPRINTING | ||||
| Journal of Plant Production | ||||
| Article 20, Volume 28, Issue 7, July 2003, Page 5599-5608 PDF (1.23 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.252520 | ||||
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| Authors | ||||
| Kh. A. Okasha,; R. M. Helal; M. E. Ragab; S. A. Esmail | ||||
| Hort. Dept., Fac. of Agric., Ain Shams Univ., Shoubra EI-Khima, Cairo, Egypt. | ||||
| Abstract | ||||
| This study was conducted during 1999/2000 and 2000/2001 seasons to investigate fruit chemical characteristics and their heterosis and fingerprinting of the new obtained strawberry hybrids from the specific hybridization between the two octaploid species Fragaria chi/oensis and Fragaria virginiana. Twelve new obtained strawberry hybrids and their parents were evaluated according to chemical characters tics of fruits. viz .. total soluble solids. total acidity, ascorbic acid contents and their heterosis. Protein fingerprinting for the hybrids and parents was also carried out. Results showed that most of the produced hybrids had the highest values of TSS o,vith no significant differences between each other. Most of the hybrids showed positive heterosis for TSS content over the best parent. Concerning titratable acidity. the highest value of heterosis was exhibited in 89, 85 hybrids and 96. Most of hybrid showed negative heterosis while A4 had no heterosis for TA trait in the two seasons. A2 and 811 hybrids had the highest values of TSSrrA ratio as compared with all hybrids as well as their parents. A2 and 811 had the highest values of heterosis for TSSrrA ratio a nd a II hybrid showed positive heterosis.A2 and A3 hybrids recorded significant increment in ascorbic acid content as compared with all hybrids. All hybrids showed negative heterosis compared to the b est parent in the two seasons. SDS- PAGE of protein was successfully u sed for both identification and differentiation of strawberry genotypes. The study conclude that twelve promising hybrids were obtained from reconstitution of Fragaria X ananassa from the specific hybridization between Fragaria chiloensis and Fragaria virginiana. Such hybrids are very important for further breeding programs | ||||
| Keywords | ||||
| Strawberry; hybrids. TSS; Total acidity; Ascorbic acid; Protein fingerprinting | ||||
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