Articles

Field and laboratory screening of Romanian maize landraces very resistant to low temperatures


Abstract


Submountain and mountain areas of Romania have a wide variety of maize landraces that

have not been characterized, and landraces varieties may be a good source of new allelic

diversity for useful traits. There is possible due to studies and comprehensive measures which

can lead to the maintenance of biodiversity and increase its efficiency. The paper presents the

results of characterization and evaluation of a total of 61 local landraces with cold test index

>84%, selected from a total of 300 studied local landraces. They were characterized in the

field and laboratory from morphologic, agronomic and physiologic point of view, as a basis

for use of this maize accessions in a breeding program for creating of extra earlier hybrids.

Landraces maize accessions: SVGB-1790, SVGB-7754, SVGB-8012, SVGB-14453, SVGB-

5172 were identified with high yield components traits and extremely resistant to low

temperatures (K>0,92).

Utilization of these local landraces as starting material can lead to the identification of useful

genes sources for improvement of important agronomic characters of maize (yield capacity,

precocity, resistance to low temperatures and to Fusarium infection).

This accessions have a good agronomic stability, could be potentials donors of genes to

improve maize tolerance to low temperature in order to create hybrids for cold and wet areas.


Keywords

maize landraces, genetic resources, cold test index, kernels,

Full Text:

PDF





Maydica - A journal devoted to maize and allied species

ISSN: 2279-8013