Effects of yard waste compost and maize (Zea mays) cultivar on population densities of plant-parasitic nematodes were examined in four experiments in north Florida. In one experiment, eight maize cultivars were evaluated; the other three experiments involved split-plot designs with compost treatments as main plots and maize cultivars as subplots. The three compost treatments used in these exper...

Drought is the major yield-limiting abiotic factor of tea cultivation. In the present study, influence of drought stress on cellular ultrastructure and antioxidants was studied drought-tolerant (TV-23) and -sensitive (S.3/A3) tea cultivars by imposing drought stress for 21 days. Drought stress led to considerable structural alterations in mitochondria, chloroplast and vacuole. Lesser membrane i...

Phenotypic uniformity of carrot androgenic lines of R1 generations was assessed in respect to several morphological traits in vegetative and generative stages. Seeds of R1 populations were obtained by self pollination of R0 androgenic plants derived by the use of anther culture technique from three donor cultivars: ‘HCM’, ‘CxC9900 F1’ and ‘Narbonne F1’. R1 plants of donor cultivar ‘HCM’ were ob...

Plant variety and cultivar identification is one of the most important aspects in agricultural systems. The large number of varieties or landraces among crop plants has made it difficult to identify and characterize varieties solely on the basis of morphological characters because they are non stable and originate due to environmental and climatic conditions, and therefore phenotypic plasticity...

The comparative responses of two broccoli cultivars (Brassica oleracea var. Italica, cv. Parthenon and cv. Naxos) to a 15 d exposure to different NaCl levels were investigated. Salinity led to increased concentrations of Na(+) and Cl(-) ions in both cultivars, a disruption of the endogenous minerals levels in the shoots and roots-that varied with the cultivar and salt concentration-and decrease...

A major restriction on sand pear (Pyrus pyrifolia) production is black spot disease caused by the necrotrophic fungus Alternaria alternata. However, the pear response mechanism to A. alternata is unknown at the molecular level. Here, host responses of a resistant cultivar Cuiguan (CG) and a susceptible cultivar Sucui1 (SC1) to A. alternata infection were investigated. We found that the primary ...

The influence of cultivar and crop year on mineral components of apple fruits was investigated using three cultivars cultivated at Morioka Branch, Fruit Tree Research Station in 1980 to 1982. The mineral components measured were 9 elmemts, i.e. sodium, potassium, magnesium, calcium, iron, manganese, copper, zinc, and phosphorus. The potassium, magnesium, manganese, and phosphorus contents were ...

The effect of variation of harvest season and cultivar on the total phenolic content (TPC), total flavonoid content (TFC), HPLC-UV/DAD profile and antioxidant properties in Vaccinium ashei (Rabbiteye blueberry) leaves grown in Brazil was evaluated. The cultivars collected in December and March were Aliceblue, Powderblue, Climax, Bluegem and FloridaM. It was observed that leaves from March had t...

Sinorhizobium fredii USDA257 forms nitrogen-fixing nodules on primitive soybean (Glycine max) cultivar Peking but fails to nodulate the improved cultivar McCall. Cultivar specificity is governed by a plasmid-borne locus, nolXBTUV. By DNA sequence analysis, we have identified two open reading frames, y4yA and y4yB, immediately downstream of nolX. Northern (RNA) blot analysis indicated that the e...

Traditional rice cultivars in Sri Lanka conserve different abiotic and biotic tolerant traits but the yield of traditional rice cultivars is not as much of improved cultivars. Abiotic stress tolerance of some traditional rice cultivars were evaluated in previous studies at Faculty of Agriculture, Mapalana, Sri Lanka and this study attempted to understand the possibility of enhancing the yield a...