Light availability has a profound effect on plant growth and development. One of the ways to study the effects of light intensity on plant growth and development without the confounding problem of photosynthate availability is sucrose injection/supplementation. A greenhouse experiment was conducted to evaluate the effects of light levels (0% and 75% shade) and sucrose injection (distilled water...

Amaranthus retroflexus L. and Chenopodium album are noxious weeds that have a cosmopolitan distribution. These species successfully invade adapted to wide variety of diverse climates. In this paper, we evaluated the morphology biochemistry 16 populations A. 17 C. Seeds from collected Spain, France, Iran were grown together at experimental field agriculture research University Mohaghegh Ardabili...

The black-bean aphid Aphis fabae bears populations of coccoid symbiotic bacteria Buchnera spp. at 2.0-3.2 x 10(7)cells mg(-1)aphid mass and rod-shaped secondary symbionts of uncertain taxonomic affiliation at 0.1-0.6 x 10(7)cells mg(-1)aphid mass. Buchnera provides essential amino acids, supplementing the poor supply in the aphid diet of plant phloem sap. Comparison of the performance of A. fab...

İnsanların yaşamında temel besin maddelerinden biri olan şekerin, üretim kaynaklarından birisi de önemli bir endüstri bitkisi şeker pancarı (Beta vulgaris L.)’dır. Şeker pancarı, Kırşehir ilinde miktarı en fazla bitkisel üründür. Çalışmada ili Merkez, Akpınar, Boztepe, Kaman ve Mucur ilçeleri alanlarında sorun yabancı otlar bunların yaygınlıkları ile yoğunluklarının belirlenmesi amaçlanmıştır. ...

the effects of above and below-ground competition between chenopodium album and sugar beet (beta vulgaris) on growth, yield and quality of two sugar beet cultivars of morphologically contrasting growth habit have been investigated a factorial experiment (2 × 4) under glass-house conditions in a randomised complete block design with three replications was done. c. album and two sugar beet cultiv...

in order to investigate the effects of common lambsquarters (chenopodium album l.) competition on corn (zea mays l.) morphological and physiological characteristics, an experiment was conducted in 2005-2006 at the research station of agricultural faculty, ferdowsi university of mashhad, iran. the experimental design was split plot based on randomized complete block design (rcbd) with three repl...