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Jerkovic Z.,Institute of Field and Vegetable Crops | Prijic Z.,Institute of Field and Vegetable Crops | Jevtic R.,Institute of Field and Vegetable Crops | Lalosevic M.,Institute of Field and Vegetable Crops
Plant Protection Science

Seedlings of ten Lr near-isogenic lines (NIL) and four wheat lines with enhanced resistance to Puccinia triticina were treated with overdosed neonicotinoid insecticides. The enzyme of Lr 20 gene accelerated thiacloprid degradation while Lr 29 gene accelerated thiamethoxam degradation according to NILs upper plant parts lengths reduction by 6% or 10% six days after the last of three daily treatments. Lr 27 and Lr 33 effects were intermediate on thiamethoxam but only in the driest conditions. Among other NILs the growth was increased 1-5% by N faster release of S or Cl. The accumulation of Lr 20 and Lr 9 facilitated treatment in the late grain filling period when the amount of their circled residues in seed was permissible. In semiarid regions, when thiamethoxam was applied before June, respecting the adequate leaf area duration of prevalent varieties, interaction with Lr 29 could be also practical through simultaneous release of fungi reducing elements. © 2015, Czech Academy of Agricultural Sciences. All rights reserved. Source

Imerovski I.,Institute of Field and Vegetable Crops | Dimitrijevic A.,Institute of Field and Vegetable Crops | Miladinovic D.,Institute of Field and Vegetable Crops | Jocic S.,Institute of Field and Vegetable Crops | And 3 more authors.
Molecular Breeding

Downy mildew is a fungal disease of sunflower that can lead to severe yield losses. The damage caused by the pathogen can be controlled by growing resistant sunflower varieties. Gene Plarg was introgressed into cultivated sunflower from the wild species Helianthus argophyllus and provides resistance against all known downy mildew races. In this study, we used a mapping population from the cross-RHA 419/RHA-N-49. We identified a new co-segregating simple sequence repeat marker ORS675 and confirmed the co-segregation of markers ORS716 and ORS662 with Plarg gene. The markers were validated on two registered resistant inbred lines RHA 443 and RHA 464, as well as on twenty inbred lines RH 1-20 obtained through methods of classical breeding. Molecular marker ORS716 was assessed for usefulness in selecting resistant progeny in 12 BC populations. Markers were found to be valuable for molecular breeding in diverse genetic backgrounds and enabled transfer of the resistance gene in different sunflower genotypes. © 2014 Springer Science+Business Media Dordrecht. Source

Cupina B.,University of Novi Sad | Cupina B.,Institute of Field and Vegetable Crops | Mikic A.,University of Novi Sad | Mikic A.,Institute of Field and Vegetable Crops | And 10 more authors.
Indian Journal of Agricultural Sciences

A two-year (2008-2009) field trial was carried out in to assess whether intercropping of spring annual legumes may increase grain yield. It included two legumes with high standing ability, faba bean (Vicia faba L.) and white lupin (Lupinus albus L.), and three legumes with poor standing ability, field pea (Pisum sativum L.), common vetch (Vicia sativa L.) and grass pea (Lathyrus sativus L.). Both supporting crops were combined with three supported crops at three different proportions, namely 75% + 25%, 50% + 50% and 25% + 75%, in respect to the specific sowing rate of each pure stand that were included as controls. The reliability of each intercrop was determined by calculating land equivalent ratio. The intercrop of 25% white lupin + 75% grass pea had the highest average total grain yield (5 350 kg/ha). The highest average LER (1.31) was in 25% white lupin + 75% grass pea. Source

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