Effect of plant density on yield and physiological characteristics of six canola cultivars

Nasiri, A; Samdaliri, Morteza; Rad, Amirhossein Shirani; Shahsavari, Nasser; Kale, Amirabbas Mosavi; Jabbari, Hamid

doi:10.25081/jsa.2017.v1.819

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…Our trial results showed the highest significant (p<0.05) seed yield per plant of 85.2 g at 40 plants m -2 in comparison with other plant populations (Table 6). Similar results was obtained in the study of Nasiri et al (2017). Authors include 6 different oilseed rape genotypes (Ahmadi, Okapi, Opera, L72, Karaj1 and SW102) and found that the seed yield at 60 and 80 plants m -2 in all varieties was significantly reduced compared to the 40 plants m -2 .…”

Section: Discussionsupporting

confidence: 83%

Yield components of winter oilseed rape regard to plant population

Anđelić¹,

Antunović

Stošić

et al. 2018

Columella

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The aim of this study was to analyze the yield components of winter oilseed rape depending on the plant population in 2017/2018 growing season. Three plant populatios were considered in the study: 20, 40 and 60 plants m -2 . At harvest several yield components were determined: plant height (cm), plant mass (g), height of the first fertile branch (cm), number of fertile lateral branches, number of pods per plant, length of the pod (cm), number of seeds per pod, mass of seeds per pod (g), number of seeds per plant, 1000 grain mass (g) and yield of seeds per plant (g). At the plant population of 40 plants m -2 the plants were the highest (153.4 cm), with the highest plant mass (295.3 g) and the number of lateral fertile branches (5.6 branches per plant). Furthermore, the plants from 40 plants m -2 had the highest number of pods per plant (716 pieces), the longest pods (6.5 cm) with the largest number of seeds per pod (21.0) and the number of seeds per plant (15 036 seeds). The highest and significant correlation coeficient was found between number of pods per plant and plant mass (r=0.890***) and than between the number of lateral branches and number of pods per plant (r=0.850***). Linear regression showed that for every centimeter increment of pod length the number of seeds increase for 4.8 seeds at 20 and 40 plants m -2 and for 5.5 seeds per pod at 60 plants m -2 . Furthermore, regression analysis showed that for every centimeter pod length increment the seeds mass per pod increase on average of all plant population for 0.02 g.

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Section: Discussionsupporting

confidence: 83%

Yield components of winter oilseed rape regard to plant population

Anđelić¹,

Antunović

Stošić

et al. 2018

Columella

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“…Similar result were found by parameters than the treatment without spraying humic acid application. These results agree with (Nasiri et al, 2017).…”

Section: Harvest Index (%)supporting

confidence: 92%

INFLUNCE OF CULTIVARS, PLANT GEOMETRY, HUMIC ACID AND THEIR INTERACTIONS ON GROWTH AND YIELD OF NIGER (Guizotia abyssinicia Cass.) CROP

Suleiman

Mahmood

2021

ZJPAS

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A field experiment was undertaken during the spring growing season of 2020 at the experimental farm Qalamurtga-Erbil with GPS reading of (Latitude 36 o 20ʹ 53.81" N, altitude 44 o 06ʹ 20.76 ") to study the effect of three Niger cultivars (Bengalnuglue, Karal and Animax), two plant density (45 and 60cm) between rows and three levels of humic acid (0 ,350 and 700) mg L -1 on Niger (Guizotia abyssinicia Cass.) growth, yield and its component and yield using factorial RCBD with three replicates. The results indicated to recording the highest seed yield values (547.46 ,549.04 and 664.74) kg ha -1 for Animax cultivar, 45cm distance between rows and spraying of 700mg L -1 humic acid respectively. The combination between Animax cultivar -45cm distance between rows -700mg L -1 humic acid (C 3 × G 1 × HA 2 ) recorded the highest value for seed yield kg ha -1 which was (759.06) kg ha -1 .

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“…The rapeseed (Brassica napus L.) crop contains 40-44% oil and is considered to be one of the most important edible oilseeds (Ashkiani et al, 2020;Cashin et al, 2014;FAO, 2018), being the third annual oil crop in the world after soybean and oil palm (Enjalbert et al, 2013). One of the most critical factors that inhibits the development of the area under cultivation and prevents the successful production of rapeseed in semi-arid regions is moisture deficiency at the end of the growth period (reproductive stage) to which it is very susceptible (Nasiri et al, 2017). Among the various abiotic stresses, drought stress is the most severe, destructive and significant restricting environmental factor for sustainable agricultural production (Ardakani et al, 2009;Davaran Hagh et al, 2016;Pace and Benincasa, 2010;Yuncai and Schmidhalter, 2005).…”

Section: Introductionmentioning

confidence: 99%

Seed yield and physiological responses to deal with drought stress and late sowing date for promising lines of rapeseed (<i>Brassica napus</i> L.)

Teymoori¹,

Ardakani²,

Rad³

et al. 2020

Int. Agrophys.

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The introduction of new genotypes of crop plants is among the most strategic research programmes, especially in arid and semi-arid regions. To study the effect of drought stress on seed yield and some physiological traits of promising lines of rapeseed at different sowing dates, an experiment was conducted for two years (2015-2017) in a semi-arid region of Iran. In this research, two conventional sowing dates were set in October 12 and November 1 (late sowing). Irrigation was carried out at two levels: normal irrigation (control) and irrigation interruption from the silique formation stage to the next stage (late-season drought stress). The genotypes included four promising lines (L1112, L1091, L1093, L1206), and a cultivar (Okapi) as a control. Results showed that delayed sowing and drought stress increased carbohydrate content and decreased seed yield, with the highest carbohydrate content and highest yield loss in L1112 and the lowest carbohydrate and lowest yield loss in the L1206 line. Among the physiological traits measured, stomatal resistance had the highest degree of correlation and the highest direct negative effect on seed yield, which declined with increasing stomatal resistance. L1112 had the highest stomatal resistance (52.76 s cm-1) in delayed sowing and drought stress conditions. Therefore, L1206 and L1112 were revealed to be resistant and sensitive lines, respectively.

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Effect of plant density on yield and physiological characteristics of six canola cultivars

Cited by 8 publications

References 8 publications

Yield components of winter oilseed rape regard to plant population

Yield components of winter oilseed rape regard to plant population

INFLUNCE OF CULTIVARS, PLANT GEOMETRY, HUMIC ACID AND THEIR INTERACTIONS ON GROWTH AND YIELD OF NIGER (Guizotia abyssinicia Cass.) CROP

Seed yield and physiological responses to deal with drought stress and late sowing date for promising lines of rapeseed (<i>Brassica napus</i> L.)

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