Normal view MARC view ISBD view

Evaluation of some tomato genotypes against the root knot nematode, Meloidogyne Incognita [electronic resource].

By:

El-Shennawy, Mohamed Z

Contributor(s):

Khalil, Mona R

Language: English Summary language: Arabic Description: p.479-489Other title:

تقييم بعض التراكيب الوراثية فى الطماطم لمقاومة نيماتودا تعقد الجذور [Added title page title]

Uniform titles:

Zagazig journal of agricultural research, 2014 v. 41 (3) [electronic resource].

Subject(s):

Online resources:

Full Text Article.

In: Zagazig Journal of Agricultural Research 2014.v.41(3)Summary: In the present investigation, 15 F1 combinations and their parental cultivars or lines of tomato were tested for their response to Meloidogyne incognita by inoculation with 1000 2nd stage juveniles of nematode in pots experiment at the Experimental Farm, Faculty of Agriculture, Shebin El- Kom .. Population means, degree of heterosis and types of gene effects were estimated for the studied traits. Obtained results showed significant differences among the studied genotypes against nematode infection (formation of galls, egg masses and number of developmental stages) as well as their growth parameters (root weight, shoot weight, plant height and weight of fruits). None of the evaluated genotypes was immune. However, four resistance rates were found; i.e., highly resistant by the two crosses Endless Summer x Bl.14 and Endless Summer x Roma hybrids, resistant by the cultivar Endless Summer and the cross Super Beef Steak x Endless Summer. The remaining genotypes were rated as moderately resistant, except the cultivar Super Beef Steak, which was scored as moderately susceptible. General and specific combining abilities (GCA: SCA) showed that both additive and non- additive gene actions were involved in the inheritance of resistance for root knot nematode.

Average rating: 0.0 (0 votes)

No physical items for this record

Includes references.

In the present investigation, 15 F1 combinations and their parental cultivars or lines of tomato were tested for their response to Meloidogyne incognita by inoculation with 1000 2nd stage juveniles of nematode in pots experiment at the Experimental Farm, Faculty of Agriculture, Shebin El- Kom .. Population means, degree of heterosis and types of gene effects were estimated for the studied traits. Obtained results showed significant differences among the studied genotypes against nematode infection (formation of galls, egg masses and number of developmental stages) as well as their growth parameters (root weight, shoot weight, plant height and weight of fruits). None of the evaluated genotypes was immune. However, four resistance rates were found; i.e., highly resistant by the two crosses Endless Summer x Bl.14 and Endless Summer x Roma hybrids, resistant by the cultivar Endless Summer and the cross Super Beef Steak x Endless Summer. The remaining genotypes were rated as moderately resistant, except the cultivar Super Beef Steak, which was scored as moderately susceptible. General and specific combining abilities (GCA: SCA) showed that both additive and non- additive gene actions were involved in the inheritance of resistance for root knot nematode.

Summary in Arabic.

There are no comments on this title.

to post a comment.