ORIGINAL_ARTICLE
A study on cold resistance in safflower varieties and lines by physiological and biochemical indices
The aim of the present investigation was to study the response of different safflower genotypes to low temperatures in germination and seedling stages and find its relation with field performance. In this study, 16 winter safflower genotypes were evaluated for cold and frost tolerance in germination and seedling stages in controlled condition and field condition. Results showed that the effect of temperature, genotype and temperature × genotype interaction on germination and germination rate was significant. Below 15 °C, temperature reduced maximum germination significantly. The lowest and the highest germination per cent occurred in 5 °C and 15 °C, respectively. Results revealed that cold stress led to increase proline and soluble sugars concentration in leaves significantly and there was high variation among genotypes for this character. Cold stress increased cell membrane injury, electrolyte leakage and electric conductivity (EC) in leaves. There were significant differences between genotypes for cell membrane injury at 1% level of probability. Combined analysis of variance indicated differences among genotypes for thousand kernel weight (TKW), days to heading (DH) and maturity (DM), plant height (PH) and grain yield to be significant (P < 0.01). The results of cluster analysis also showed the genotypes based on physiological traits and mean yield tend to be classified in three groups, where the best genotypes (entries No. 1, 2,15 and 16) with high promptness index (PI), proline content, low injury index and high-yielding performance were classified in the third group.
https://plantproduction.scu.ac.ir/article_12228_e92849d8fa7137638046154852854ba8.pdf
2011-03-20
1
14
Safflower
Cold resistance
Promptness index
Proline
Ion leakage
Cell Membrane injury
R
R
rajabi83@yahoo.com
1
کارشناس ارشد موسسه تحقیقات کشاورزی دیم کرمانشاه
LEAD_AUTHOR
S.S
P
2
استادیار معاونت موسسه تحقیقات کشاورزی دیم کرمانشاه
AUTHOR
ORIGINAL_ARTICLE
The effect of nitrogen fertilizer rates and withheld irrigation stress on yield and yield components in different growth stages of oilseed rape
Oilseed rape (Brassica napus L.) is one of the most important oilseed crop which in recent years was attentioned, therefore; cultivation, production and its management in order to increase grain yield is very important. Thus, a two year (2006-2008) field experiment was conducted at the Experimental Research Field of College of Agriculture, Shiraz University, to study the effect of nitrogen (N) rates (0, 75, 150, and 225 kg ha-1) and drought stress (full irrigation at all growth stages, withheld irrigation stress at flowering, pod development, and seed filling stages) on yield and yield components of oilseed rape (Talayeh cultivar). The experimental design was split plots arranged in randomized complete block design with four replications. Results showed that full irrigation and 225 kg ha-1 of nitrogen treatment had the highest grain yield, number of pods per plant, and 1000- grain weight. Increased N fertilizer application significantly increased plant height, number of branches per plant, number of pods per plant, and seed yield, but increased N fertilizer application resulted in a decrease in grain oil percentage. Full irrigation and 75 kg ha-1 of nitrogen treatment had the highest grain oil percentage. It is concluded that rapeseed has a high requirement for nitrogen fertilizer. Also, it seems that providing sufficient water to plant during flowering stage is especially important to produce higher yield with high quality at water deficit prone environments.
https://plantproduction.scu.ac.ir/article_12229_2d3ef12ee919f0c07bd7b196fcdedfd9.pdf
2011-03-20
15
30
Nitrogen Fertilizer
Withheld irrigation stress
Grain yield
Oil percentage
Rape seed
M
A
ma_ahmadi@yahoo.com
1
دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه شیراز
LEAD_AUTHOR
M.J
B
bahrani92@hotmail.com
2
استاد زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه شیراز
AUTHOR
ORIGINAL_ARTICLE
The study of adaptability of salt tolerant advanced barley (Hordeum vulgare) genotypes grown in moderate regions
This study was to evaluate the adaptability of ten salt tolerant advanced barley in six regions (Esfahan, Kerman, Yazd, Ghom, Mashhad and Gonabad) in 2002-03. Statistical design was a Randomized Complete block (RCB) with three replications. Electrical conductivities of irrigated water and soil in all regions were at least 8 ds/m and 10ds/m, respectively. Combined analysis of variance revealed interaction of genotypes * regions and genotypes were different significantly at 1% and 5%, respectively. Genotypes No. 4 (LB.Iran/una 8277//Gloria”s”/Come “s”-11M/3/Kavir) and No. 5 (73-M4-30) produced the highest grain yields (4616 and 4581 kg ha-1, respectively). Mean grain yields of Nosrat and Walfajre (checks) were 4167 and 3596 kg ha-1, respectively. Stability analysis on grain yields based on parametric method of C.V. % and non-parametric method of rank showed that genotypes No. 4 and No. 5 were most stable genotypes. Therefore, due to high grain yields, mean of genotypes No. 4 and No. 5 in all regions were selected as adaptable and salt tolerant genotypes.
https://plantproduction.scu.ac.ir/article_12231_96f82bfd152c0ece3e89ed74d6be276f.pdf
2011-03-20
31
39
Salinity
Grain yield
Adaptability
Barley
Moderate regions
M
M
mmahlooji2000@yahoo.com
1
عضو هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان
LEAD_AUTHOR
A
Y
2
عضو هیات علمی موسسه تحقیقات اصلاح تهیه نهال و بذرکرج
AUTHOR
H.R
N
3
عضو هیات علمی موسسه تحقیقات اصلاح تهیه نهال و بذرکرج
AUTHOR
Z
R
4
عضو هیات مرکز تحقیقات مرکز تحقیقات کشاورزی و منابع طبیعی استان کرمان
AUTHOR
A
J
5
عضو هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان
AUTHOR
ORIGINAL_ARTICLE
Feasibility study of spring culture of three sugar beet (Beta vulgaris L.) cultivars by paperpot and direct sowing methods in Ahvaz
To study the spring culture possibility of sugar beet cultivars in Ahvaz climatic conditions, this experiment was execute in split plots based on complete randomized design in 2000-2001 agronomic year, using three factors included date of sowing (Dec. 21, and Feb. 8th) as main plots, sowing method (direct sowing and transplanting) as sub plots and cultivars (BR1, Monodoro and Rassoul) as sub plots at Agricultural Faculty of Shahid Chamran University of Ahvaz. The second date of sowing was synchronous with transplanting of the first sowing date. Final crop harvesting for both sowing date was in July 10. Date of sowing had a high effect on root yield. Root yield in the first date of sowing was significantly more than the second date of sowing. In each sampling compared to previous sampling, root sugar content, root sugar yield and the root yield increased. Different sowing methods in synchronous date of sowing had not significant effect on root yield (p≤0.05). However, root sugar content in direct sowing was significantly more than transplanting method. In the second date of sowing, sugar content was significantly more than the first date of sowing (p≤0.05) and Monodoro variety had the most root sugar content (10.1%) and the lowest impurities. The results showed that performing spring culture of sugar beet could obtain equivalent white sugar yield with autumn sugar beet culture in Ahvaz climatic conditions.
https://plantproduction.scu.ac.ir/article_12232_7200c60cee979c7632472eddc8be75e9.pdf
2011-03-20
41
54
Sugar beet
Sugar content
Spring culture
Transplanting
Sugar yield
P
H
p.hassibi@scu.ac.ir
1
: استادیار گروه زراعت و اصلاح نباتات، دانشگاه شهید چمران اهواز
LEAD_AUTHOR
A
K
2
استاد بازنشسته گروه زراعت و اصلاح نباتات، دانشگاه شهید چمران اهواز
AUTHOR
R
M
r.mamghani@yahoo.com
3
استاد بازنشسته گروه زراعت و اصلاح نباتات، دانشگاه شهید چمران اهواز
AUTHOR
M
M
meskarbashee@scu.ac.ir
4
دانشیار گروه زراعت و اصلاح نباتات، دانشگاه شهید چمران اهواز
AUTHOR
ORIGINAL_ARTICLE
Effect of planting dates on the yield of three new corn hybrids in northern Khuzestan
In order to investigate the effect of planting dates on the yield of three new corn hybrids, an experiment was carried out during the summer of 2003 in Safiabad Agricultural Research Center. This experiment was conducted as a split plot design in complete randomized blocks with four replications with three levels of planting dates as main factors and four cultivars as sub factors. Planting dates were achieved in July, 13 and 23 and August, 2 on 2003, Sub plots were included four corn hybrids SC4-S 3393, SC4-S 3282, SC4-S 3261 and SC 704 as a check. Results showed that planting dates had a significant effect on the yield of corn hybrids. The differences of yield measurement also indicated that planting dates × hybrids interaction was significant at the 5% probability When mean comparisons were used to test for treatment differences showed that the highest yield with 11310 kg seeds/ha was obtained on sowing date of July twenty third, while the lowest yield with 8065 kg seed/ha occurred in July thirteenth when the interaction effect was evaluated in associated with treatments, it has shown that SC4-S 3393 and SC4-S3261 which were planted at the different planting dates (July, 23 and July 13) had the highest (12430 kg seeds/ha) and the lowest (6689 kg seeds/ha) yield, respectively.
https://plantproduction.scu.ac.ir/article_12234_60a6d84bbe8735c14cc9cd10b80613c7.pdf
2011-03-20
55
69
Corn
Planting dates
Hybrids
Seed yield
A
G
a_g1349@yahoo.com
1
کارشناس ارشد زراعت و مدرس تربیت معلم
LEAD_AUTHOR
M
B
barzegarimohammad@yahoo.com
2
هیئت علمی مرکز تحقیقات صفی آباد دزفول
AUTHOR
F
F
fotouhi@iaud.ac.ir
3
دانشیار، گروه زراعت دانشگاه آزاد اسلامی واحد دزفول
AUTHOR
ORIGINAL_ARTICLE
Evaluation of genetic diversity of some spring and winter wheat cultivars with SSR markers
In the present study, 37 microsatellite primerpairs were used for germplasm analysis and estimation of the genetic relationship and diversity between 21 spring and winter genotypes of Persian breed wheat. Genetic diversity (DI) and polymorphism information content (PIC) were calculated with average 0.68 and 0.63, respectively. Genetic similarity was calculated with Nei & Li and Jaccard methods with average 0.201 and 0.325, respetcively. The highest levels of genetic similarity for genotypes were found in Ghods and Alvand genotypes by two methods and the lowest was in Bolani and Niknejhad with Nei & Li and Jaccard methods.The number of alleles per microsatellite marker varied from 2 to 10 (average 5.37) and a total of 199 alleles were detected. The result showed all of the genotpyes could be distinguished and clustered into 4 groups with Nei & li similarity and UPGMA clustering method and all cultivars segregated by growgth type, i.e spring and winter. The data suggest that microsatellite can be used to estimate high and repeatable Polymorphism genetic diversity.
https://plantproduction.scu.ac.ir/article_12235_1bccc919c0cda04ce3bb34e00d966af6.pdf
2011-03-20
71
79
wheat
Spring and Winter
Microsatellite
Genetic diversity
Genetic similarity
B
F
bfazelinasab@gmail.com
1
دانش آموخته کارشناسی ارشد بیوتکنولوژی کشاورزی دانشگاه تهران
LEAD_AUTHOR
B
Y
2
استاد گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه تهران
AUTHOR
M.R
N
mr_naghavi@ymail.com
3
استاد گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه تهران
AUTHOR
M
M
4
عضو هیئت علمی مؤسسه تحقیقات بیوتکنولوژی کشاورزی ایران
AUTHOR
ORIGINAL_ARTICLE
Gene action for various agronomic traits in maize using generation means analysis
In order to study the inheritance and nature of action of the genes controlling various traits in maize, K18 х K74/1 and K18 х K3653/5 were crossed. Parents with F1, F2 and backcrosses generations were planted in a randomized complete block design with three replications in 2005. The results obtained from the analysis of variance showed significant differences between studied generations for all traits. Thus, the generation mean analysis was performed for all traits. The results showed that although, additive, dominance and effects of epistasis were important for days to silking, days to physiologic maturity, days from silking to physiologic maturity, ear height and the number of kernels per row and most of traits in K18 х K74/1 and K18 х K3653/5 crosses respectively but the dominance gene effects were the most important for inheritance of the majority of traits. The F1 means of most traits in both crosses were more than parents, which indicate heterosis. Average broadsense heritabilities were between 29% and 69% and between 45% and 81% and the range of narrowsense heritability were between 0.9% and 60% and between 0% and 51% for all traits In K18 х K74/1 and K18 х K3653/5 crosses, respectively.
https://plantproduction.scu.ac.ir/article_12236_a2ab8fd36983af27dabd3d2920768191.pdf
2011-03-20
81
96
Maize
Generation mean analysis
Heritability
Yield
M
Z
maza572002@yahoo.com
1
استادیار دانشگاه آزاد اسلامی واحد فیروزآباد فارس
LEAD_AUTHOR
R
CH
2
دانشیار مؤسسه تحقیقات اصلاح و تهیه نهال و بذر کرج
AUTHOR
M.R
B
mhammad reza@yahoo.com
3
استاد گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه تهران
AUTHOR
E
M
4
استاد پژوهشکده بیوتکنولوژی کشاورزی کرج
AUTHOR
ORIGINAL_ARTICLE
A study on the pollen morphology of Khuzestan male date varieties by scanning electron microscopy (SEM)
Regarding the diversity of male date varieties in Khuzestan province used for pollination of female trees, the importance of pollen type in fertilization, its affect on quality and quantity of fruits and the prominence of their variation for breeding objects. In this study, the pollen morphology of 15 male date varieties were studied under a scanning electron microscope (SEM). For this propose, pollen grains were photographed at 500, 1000, 5000, 10000 and 20000 X in different angles and polar axis (P), equatorial diameter (E), P/E ratio, exine patterns were studied. Results indicated that date pollen is ellipsoid in shape; and exine is reticulate with a main fissure. There were significant differences in length and diameter of pollen grains under study. Maximum and minimum length belonged to Ghanami sabz (code 7) and Ghanami Shadegan (code 8), respectively and Samesmavi (code 1) and Ghanami Shadegan (code 8) had the max and min diameter respectively. Comparisons of the spectrum analysis of mineral composition showed that main elements of different studied date pollen grains are carbon, oxygen, chlorine and phosphorous
https://plantproduction.scu.ac.ir/article_12237_12500dbf7c51cdc89bcbca056bfa615c.pdf
2011-03-20
97
109
Date palm
Male cultivars
Pollen
Scanning electron microscopy
Morphology
S.M.H
M
mortazavi_mh@yahoo.com
1
استادیار گروه باغبانی، دانشکده کشاورزی دانشگاه شهید چمران اهواز
LEAD_AUTHOR
A
T
aziztorahi@yahoo.com
2
عضو هیأت علمی مؤسسه تحقیقات خرما و میوههای گرمسیری کشور
AUTHOR
L
B
3
دانشجوی کارشناسی ارشد گروه باغبانی، دانشکده کشاورزی دانشگاه شهید چمران اهواز
AUTHOR