xTriticosecale Witm, seed size, drought, germination, seedling growth.

Effect of seed size (small, medium and large) on germination and seedling growth of triticale (xTriticosecale Witm. cv. Presto) at the different osmotic potential of NaCl and PEG solutions weredetermined in the present study. Germination tests were conducted under five osmotic potential levels (-0.45, -0.77, -1.03, -1.44 MPa, and Control) of PEG 6000 and NaCl. Germination percentage (%) at 4 and 8th days and also seedling growth traits such as root and shoot length (mm), dry root and shoot weight (mg), root : shoot length (R:S) ratio, and relative water content of shoot (RWC, %) were investigated inthis study. The results indicated that decreases in the osmotic potentials caused a reduction in germination percentage and seedling growth. It was seen that drought created by PEG 6000 had morenegative effects on germination and seedling growth than that of NaCl. In consequence, the total germinability and seedling growth were higher in large seeds rather than in small seeds in control solution and under osmotic stress. In addition, it was observed that seedlings obtained from larger seeds survived even at the lower osmotic potential of PEG and NaCl; whereas, seedling obtained from small seeds did not survive in the intensive stress

Alleviation of osmotic stress of water and salt in germination and seedling growth of triticale with seed priming treatments

Effects of seed priming treatments with 0.5% KH2PO4 (w/v) solution and water were determined on germination and seedling characters of hexaploid triticale (Triticosecale Witm., cv. Presto) in differentosmotic potential of NaCl and PEG solutions. Drought and salt osmotic stress conditions were separately created by using PEG 6000 and NaCl, respectively, at different osmotic potentials (-0.45, -0.77, -1.03 and -1.44 MPa and control). At the equivalent osmotic potential, the effects of PEG 6000 were more harmful than NaCl on germination and seedling stage. Germination percentage and seedlinggrowth and also relative water content (RWC, %) decreased with the decrease in osmotic potential of PEG 6000 and NaCl. But root-to-shoot length ratios increased with the effects of osmotic stress of PEG6000 and NaCl. Despite the negative effects of two stress conditions, the two priming treatments were effective in improving germination percentage and seedling growth in Presto. But seed primedtreatment was effective at the lowest osmotic potentials; therefore, seedling growth survived at the highest concentrations. Consequently, the effect of hydropriming is very pronounced particularly inimproving germination and seedling growth in low stress

The effects of different sowing depth on grain yield and some grain yield components in wheat (Triticum aestivum L.) cultivars under dryland conditions

and yield components for wheat cultivars during 2004-2006 at one site in Van Province in Eastern Turkey. Grain yield and yield components were found to positively correlate with coleoptile length, with marked declines observed in grain yield and yield components among varieties with shorter coleoptiles in deepest sowing. Wheat sown at 5 cm gave greater yields than wheat sown at 3, 7 and 9 cm by 19.9, 22.3 and 62.5%, respectively. The highest grain yield (2.98 T ha-1) was obtained with the Alparslancultivar sown at a depth of 5 cm. Grain yield of all varieties tested was drastically reduced when sown at depths of 9 cm, with the exception of the local Tir and Alparslan varieties, both of which, when compared to the other varieties tested, had longer coleoptiles

Investigations on some biological characters of Pseudococcus cryptus (Hempel) (Hemiptera: Pseudococcidae) on four citrus species

The developmental time, longevity, fecundity, sex ratio, duration of preoviposition, oviposition and postoviposition, number of nymphs and life table parameters of Pseudococcus cryptus (Hempel) (Hemiptera: Pseudococcidae) were studied on four citrus (Rutaceae) species (Citrus paradisi, C. limon, C. unshiu, C. sinensis ), in an acclimatized room at 25±2°C, 60-70% relative humidity and 14:10h (1:d) photoperiod. The results suggest that some of the parameters for P cryptus populations were affected by the species of citrus, and that C. limon was the preferred host plant. The population parameters on C. limon were determined as rm= 0.1526 d-1; R0= 65.8 offspring/individual and T0= 27.4 days

New record of ferrisa dasylirii (Cockerell) (hemiptera: Coccomorpha: Pseudococcidae) in Indonesia

2-s2.0-85098055901The occurrence of mealybug species, Ferrisa dasylirii (Cockerell) (Hemiptera: Pseudococcidae) was first reported in Indonesia. It was found on Durio zibethinus Murray (Malvaceae), Gliricidia sepium (Jacq.) (Fabaceae), Hibiscus spp. (Malvaceae), Psidium guajava L. (Myrtaceae), Solanum torvum Swartz (Solanaceae), and Theobroma cacao L. (Malvaceae) at some regencies in Bengkulu Province, Southern Sumatra, Indonesia. © 2020, Penerbit Universiti Kebangsaan Malaysia. All rights reserved.DIPA-042.012.400977/2019 Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPMThis project was made possible by the Research and Community Service Centre, Lembaga Penelitan dan Pengabdian pada Masyarakat (LPPM), The University of Bengkulu with cooperative agreement No. SP. DIPA-042.012.400977/2019

Effects of sowing methods and rates on weeds, grain yield and some yield components of wheat [EkimYöntemi ve si{dotless}kli{dotless}gi{dotless}ni{dotless}n bugdayda tane verimi, bazi{dotless} verim ögeleri ve yabanci{dotless} otlar üzerine etkileri]

This research was conducted to determine the effects of different sowing rates (450, 550 and 650 seed m -2) and sowing methods (sowing to the rows, broadcasting to seeding depth and contrary rows with 90°) on weeds, grain yield and some yield components of wheat local "Tir" variety (Triticum aestivum L. ssp vulgare Vill. v. leucospermum Körn) under dryland condition of Van in 2006-07 and 2008-09 winter growing seasons. It was found that contrary rows with 90° unaffected to reduce weeds density but it was highly effective sowing methods to decrease weeds biomass. However, higher seeding rates, in the current study, reduced insignificantly weeds density, but it reduced weed biomass. In the current study, sowing methods and seeding rates significantly affected grain yields and yields components. The highest grain yield was obtained 650 seed m -2 and sowing to contrary rows with 90°. © Ankara Üniversitesi Ziraat Fakültesi

A new species of Dysmicoccus damaging lavender in French Provence (Hemiptera, Sternorrhyncha, Pseudococcidae)

Germain, F., Matile-Ferrero, D., Kaydan, M. B., Malausa, T., Williams, D. J. (2015): A new species of Dysmicoccus damaging lavender in French Provence (Hemiptera, Sternorrhyncha, Pseudococcidae). Zootaxa 3980 (4): 575-583, DOI: http://dx.doi.org/10.11646/zootaxa.3980.4.

A new species of Dysmicoccus damaging lavender in French Provence (Hemiptera, Sternorrhyncha, Pseudococcidae)

PubMedID: 26249973Dysmicoccus lavandulae Germain, Matile-Ferrero & Williams n. sp. is described and illustrated, and its DNA sequences given. The species lives on Lavandula x intermedia, the cultivated form of lavender grown in the French region of Provence. In addition the mealybug species recorded in France on indigenous lavender are listed. The status of two related genera, Trionymus Berg and Dysmicoccus Ferris, is discussed. Copyright © 2015 Magnolia Press