Morphological traits and yield of red clover (Trifolium pratense L.) genotypes with varying inflorescence length
Zajac, T.,Akademia Rolnicza, Krakow (Poland). Katedra Szczegolowej Uprawy Roslin | Goral, H.,Akademia Rolnicza, Krakow (Poland). Katedra Hodowli Roslin i Nasiennictwa | Witkowicz, R.,Akademia Rolnicza, Krakow (Poland). Katedra Szczegolowej Uprawy Roslin | Spiss, L.,Akademia Rolnicza, Krakow (Poland). Katedra Hodowli Roslin i Nasiennictwa
Two red clover breeding strains with elongated flower heads, developed by authors (H. Goral), were studied for forage and seed yield and compared to the standard cultivar 'Nike'. In addition, six morphological shoot traits were measured interrelations were computed. The leaf area index (LAI) of successive cuts in two harvest years was determined on the basis of shoot density and leaf area of individual shoots. All three genotypes exhibited a high leaf area on shoots and a very high productivity. Among the morphological traits only shoot height could be a good selective criterion because it is easily measured, is significantly associated, weight and shoot leaf area and its variation is low. Both strains, particularly the one with longer inflorescences belong to short-lived red clover forms giving satisfactory forage and seed yields in the first harvest year. Depending on the strain the seeds per elongated inflorescence in the first harvest year was higher by 92 and 42 percent compared to that of a standard cultivar
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