Study on the morphology, compatibility and resistances of the interspecific hybrids between L. Esculentum. Mill and L. Peruvianum

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Xu, H, Long, M, Yu, W, Lu, C ORCID: https://orcid.org/0000-0002-0064-4725, Yang, R, Wu, H, Lu, W, She, J and Zhou, H, 1990. Study on the morphology, compatibility and resistances of the interspecific hybrids between L. Esculentum. Mill and L. Peruvianum. Acta Horticulturae Sinica, 18 (3), pp. 233-238. ISSN 0513-353X

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Abstract

English abstract: 2200 interspecific F1 hybrid plants between L. esculentum ( cultivas Beijing Zaohong) as pistal parent and L. peruvianum ( the accession 8 of PI 128657) were obtained with the means of embryo culture. Among the 1295 F1 hybrid plants observed, 287 plants shew normal in flowering, fruit-setting and seed-developing, the rest set only a few fruits with no seeds inside due to the abnormality in chromo-some numbers ( 2n = 48-96 ) . Many characters of the F1 hybrid were intermidiate to those of its parents such as the shape and size of leaves, growing habit, and size of fruits; but the novel variations also appeared in the F1 hybrid and its progenies, for instance, the color of the F1 fruits and the shape and arrangement of inflorescene in F2 generation. The interspecific self-incompatibility was overcome with the natu-ral "intercrossing" between F1 plants, meanwhile, the forced self-polli-nation did not result in fruit-setting. The backcrossing between the hybrids and both parents in the reciprocal combinations shew the high incompatibility. All lines of the F1 hybrids and its progenies were highly resistant to strain 0 and strain 1 of TMV respectively, The F2 generation had only tolerance (55.6%) to strain 1·2 of TMV while some lines of F3 generation shew resistance, which indicates that the accession 8 of L. peruviatnum ( PI128657 ) possibly possesses TM_(2) ~a gene. The reactions of the F2 to the fern-leaf strain of CMV from Nan-jing region were high resistance (7.5%), resistance (32.5%), tole-rance (42.5%) and susceptibility (17.5%); The inoculating of the strong strain of CMV from Nanjing region made half of the F2 lines show tolerant and another half susceptible;7.5% lines in F3 generation. shew resistant to the same strain.

Item Type:	Journal article
Description:	Chinese language
Publication Title:	Acta Horticulturae Sinica
Creators:	Xu, H., Long, M., Yu, W., Lu, C., Yang, R., Wu, H., Lu, W., She, J. and Zhou, H.
Publisher:	Chinese Society for Horticultural Science
Date:	10 January 1990
Volume:	18
Number:	3
ISSN:	0513-353X
Divisions:	Schools > School of Animal, Rural and Environmental Sciences
Record created by:	Jonathan Gallacher
Date Added:	19 May 2017 08:46
Last Modified:	09 Jun 2017 14:14
URI:	https://irep.ntu.ac.uk/id/eprint/30698