S. Nezami; S. H Nemati; H. Aroiee; A. Bagheri
Abstract
Although mint species are very sensitive to water deficit stress, but their reaction may be different to reduction of water in soil during growing season. In order to evaluate response of three Mentha species to water deficit stress, an experiment was carried out in a factorial-randomized design with ...
Read More
Although mint species are very sensitive to water deficit stress, but their reaction may be different to reduction of water in soil during growing season. In order to evaluate response of three Mentha species to water deficit stress, an experiment was carried out in a factorial-randomized design with five replication in controlled conditions and Mentha longifolia (wildmint), Mentha spicata (spearmint) and Mentha piperita (peppermint) species were subject to four soil moisture regimes (100, 80, 60, 40 of field capacity (FC)). Plants were on 70% of flowering at the harvest time. Characteristics were included percent of survival, number of total branches and stolon, number of leaf, length of total branches, green area and total dry matter. The results showed that soil moisture treatments had significant effect on survival of three mint species, because spearmint’s survival was 100 in 60 FC, while in wildmint and peppermint were decreased to 70 percent. In peppermint number of total branches and stolon were significantly excel as compare as two other species, however in spearmint number of total leaf, green area and total dry matter were more than two other species, whereas length of total branches in wildmint were higher than spearmint and peppermint. Spearmint had the greatest dry matter in 100 percent of FC and reduction of soil moisture to 80 percent of FC caused 35 percent reduction in previously mentioned parameter, while in wildmint and peppermint 62 and 56 percent reduction were observed, respectively. However spearmint was more tolerant than two other species to water deficit stress, but more study must be achieved for better understanding of mint responses to water deficit stress
A. Farzane; S.H. Nemati; N. Vahdati
Abstract
Abstract
Today, greenhouses are used for controlling different climacterics parameters, specially light and temperatures on agricultural productions. the most part of productions is Vegetables production in traditional greenhouses (TG) and unfortunately productions quality and quantity in greenhouses ...
Read More
Abstract
Today, greenhouses are used for controlling different climacterics parameters, specially light and temperatures on agricultural productions. the most part of productions is Vegetables production in traditional greenhouses (TG) and unfortunately productions quality and quantity in greenhouses is lower than modern (MG) ones. this experiment studies the effects of different climates of two kinds of greenhouses; MG (temperature: 21/93 oc, light density: 5916 fc, relative humidity:31%) and TG (temperature: 32/72 oc, light density:4650 fc, relative humidity: 45%) greenhouses on the growth of tomato cultivars. The examine was installed in Factorial Completely Randomized Plots Design with three replications and two kinds of greenhouses (TG and MG) and four tomato cultivars that were done in MG and TG of Horticulture department of Ferdowsi university in Mashhad. The results showed; Titrable acidity and pH were affected by cultivars and greenhouses, and showed the significant differences. The Effects of greenhouse climacteric on vitamin C content become signified (p≤%5). The highest number of shoots, inflorescences and fruits (59.7, 14.1 and 27.8) were observed in MG. Isn MG, yield increased up to 70 percent and was more than TG, increasing in number of fertile flowers and fruit sets led to increasing of yield in MG and also cultivars, greenhouse climacteric parameters and their interactions had significant effects on mass of 1000 grain and the seed, which was produced in MG (3.53 g), were bigger than the TG (3.20 g). So we observed that Chlorophyll content of leaf in MG, which is directly related to photosynthesis and yield, was more than the TG.
Keywords: Traditional greenhouse, Modern greenhouse, Yield, Quantitative, Qualitative characteristics
K. Davary; S.H. Nemati; B. Ghahraman; N. Sayari; P. Shahinrokhsar
Abstract
This experiment was conducted at research greenhouse of college of agriculture, Ferdowsi University of Mashhad in 1381-1382. The experiment was designed based on the splitted plots in the form of completely randomized design and in four replications. Irrigation intervals were in three levels of 12, 4, ...
Read More
This experiment was conducted at research greenhouse of college of agriculture, Ferdowsi University of Mashhad in 1381-1382. The experiment was designed based on the splitted plots in the form of completely randomized design and in four replications. Irrigation intervals were in three levels of 12, 4, and 2 times per day at primary plots, and three substrates of new perlite, used perlit, and rice bran at secondary plots. We used Paris Island as the lettuce seed. Wet weight, dry weight, and height were influenced from irrigation interval. Accordingly which 4- and 12-day irrigation intervals resulted in 466.39 and 386.94 g corresponding to highest and lowest dry weight, respectively and 12-day irrigation interval arose increase in lettuce height. Significant differences for wet and dry weights were found under different substrates. High wet and dry weights were due to used perlit and rice bran substrates, respectively. There were no significant interactions between irrigation interval and substrate on all of the growth properties of lettuce.
