SVIBOR - Project code: 1-08-119

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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SVIBOR

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Project code: 1-08-119


DEVELOPMENT AND IMPROVEMENT OF MAIZE GENETIC BASIS


Main researcher: PALAVERŠIĆ, BRANKO (73714)


Assistants
Type of research: basic
Duration from: 07/09/91. to 07/09/94.
Papers on project (total): 41
Papers on project quoted in Current Contents: 2
Institution name: B.C.Institut za oplemenjivanje i proizvodnju bilja, Zagreb (106)
Department/Institute: Maize Department
Address: Marulićev trg 5/I
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0) 1 4559-200
Phone: 385 (0) 1 750-311
Fax: 385 (0) 1 446-645
Fax: 385 (0) 1 750-523
Summary: During the three years of the project, formation of synthetic maize populations has been completed. In this way, a basis has been provided for further work on improving maize genetic basis in Croatia through the breeding process. Because of the impossibility to establish a winter nursery, synthetic populations Sy RA-A, Sy RA-L, Sy R-S, an Sy RA-E are entering the process of recurrent selection as late as in 1994. Synthetic population M-3 was developed in the mentioned period and with it started the process of breeding following the S2 model of the recurrent selction. From the initial 600 S1 progenies in 1993, about 200 lines were selected under conditions of artificial infection with a mixture of the most important diseases, to be tested in small-scale trials in 1994. The objective is to choose the best-performing lines for establishment of a new breeding cycle and obtain elite inbred lines from further selfing.

Keywords: maize (Zea mays l.), yield, disease resistance, population improvement, recurrent selection, genetic variability

Research goals: The objective was to develop maize breeding populations that will provide a broadened and improved genetic basis for breeding, following the heterotic groups i.e. models for developing maize hybrids with the best agronomic traits both in the country and abroad. In this way, the risk of epidemic attack of certain diseases is reduced and new possiblities for further yield increase, the ultimate aim of every breeding program, are offered. The populations Sy RA-L and Sy RA-S are related to the leading world pair Lancaster Surecrop and Iowa Stiff Stalk Synthetic. Domestic adapted lines, carriers of resistance to the most important maize diseases, are incorporated in the synthetic population Sy RA-A. The population M-3 presents a wide genetic basis for breeding because it contains domestic inbred lines that exhibit heterotic effect with the pair lancaster Surecrop and Iowa Stiff Stalk Synthetic. Special attention was given to the population of early maize genotypes (Sy RA-E) suitable for agroecological conditions of the middle and north-western Europe.

COOPERATION - INSTITUTIONS


  1. Name of institution: Food and Agriculture Organization
    Type of institution: State administration
    City: Rim, Italija

  2. Name of institution: Virginia Polytechnic Institute and State University
    Type of institution: Economical/Production
    City: 24061 - Blacksburg, Virginia, SAD

  3. Name of institution: MTA Mezogazdasagi Kutato Intezet
    Type of institution: University/Faculty
    City: Martonvasar, Mađarska

  4. Name of institution: ZEAINVENT
    Type of institution: University/Faculty
    City: Trnava, Slovačka
Other information about the project.
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