DISTRIBUTION OF PHOTOSYNTHATES AFTER 14CO2 ASSIMILATION BY STEMS, LEAVES, AND PODS OF RAPE PLANTS

1978 ◽  
Vol 58 (3) ◽  
pp. 783-787 ◽  
Author(s):  
D. J. MAJOR ◽  
J. B. BOLE ◽  
W. A. CHARNETSKI
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L ◽  
Plant Parts ◽  
14Co2 Assimilation ◽  
Stems And Leaves ◽  
Lower Stem

Rape (Brassica napus L. cv. Zephyr) plants were allowed to assimilate 14CO2 through lower and upper stem internodes, leaves, and pods. Lower stem internodes exported few 14C-labelled assimilates. Lower leaves exported assimilates to the roots, whereas upper stems and leaves exported primarily to seeds and pods. Pods did not export labelled assimilates to other pods or plant parts but labelled photosynthate was detected in seed of the treated pod. The older the pod was, the greater the amount of radioactivity detected in the seed. Pods were also sinks for labelled assimilates from upper stem internodes and leaves.

scholarly journals Dynamics of dry matter and selenium accumulation in oilseed rape (Brassica napus L.) in response to organic and inorganic selenium treatments

2015 ◽  
Vol 24 (2) ◽  
pp. 104-117 ◽  
Author(s):  
Nashmin Ebrahimi ◽  
Helinä Hartikainen ◽  
Asko Simojoki ◽  
Roghieh Hajiboland ◽  
Mervi M Seppänen
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Plant Residues ◽  
Growth Stages ◽  
Brassica Napus L ◽  
Soil Microbial ◽  
Plant Parts ◽  
Selenium Accumulation ◽  
Inorganic Selenium ◽  
The Impact

The uptake by and subsequent translocation of selenium (Se) within the plant is dependent on its chemical from and soil properties that dictate this trace element’s bioavailability. Plant species differ in their tendency to accumulate Se. Se taken-up by plants is returned to soil in plant residues, but the bioavailability of organic Se in those residues is poorly known. We investigated the impact of inorganic (Na2SeO4), organic (Se-enriched stem and leaf residues) Se applications and also soil microbial respiration on the growth and Se concentrations of various plant organs of oilseed rape (Brassica napus L.) during its development from the rosette to the seed filling stage. Both inorganic and organic Se slightly improved plant growth and enhanced plant development. Inorganic Se was more bioavailable than the organic forms and resulted in 3-fold to 6-fold higher Se concentrations in the siliques. Inorganic Se in autoclaved soil tended to elevate the Se concentration in all plant parts and at all growth stages. The organic Se raised Se concentrations in plants much less effectively than the inorganic selenate. Therefore, the use of inorganic Se is still recommended for biofortification.

scholarly journals Phytoremediation based on canola (Brassica napus L.) and Indian mustard (Brassica juncea L.) planted on spiked soil by aliquot amount of Cd, Cu, Pb, and Zn

2008 ◽  
Vol 53 (No. 1) ◽  
pp. 7-15 ◽  
Author(s):  
M. Turan ◽  
A. Esringü
Keyword(s):  
Heavy Metal ◽  
Brassica Napus ◽  
Metal Uptake ◽  
Indian Mustard ◽  
Metal Availability ◽  
Heavy Metal Uptake ◽  
Brassica Napus L ◽  
Plant Parts ◽  
Spiked Soil ◽  
Soil Phytoremediation

The use of plants to remove heavy metals from soil (phytoremediation) is expanding due to its cost-effectiveness as compared to conventional methods and it has revealed a great potential. Since contaminants such as Pb or Cd have a limited bioavailability in the soil, methods to facilitate their transport to the shoots and roots of plants are required for successful phytoremediation. The objective of this study was to investigate the effects of addition of different rates (0, 3, 6 and 12 mmol/kg) of ethylene diaminetetraacetate (EDTA) on heavy metal availability in soils contaminated with 50 mg/kg Cd (CdCl<sub>2</sub>), 50 mg/kg Cu (CuSO<sub>4</sub>), 50 mg/kg Pb [Pb(NO<sub>3</sub>)<sub>2</sub>] and 50 mg/kg Zn (ZnSO<sub>4</sub>), and on the capacity of canola (Brassica napus L.) and Indian mustard (Brassica junceaL.) plants to uptake Cu, Cd, Pb and Zn in a growth chamber. Results indicated that EDTA application increased heavy metal availability and uptake by plants. Significant differences were obtained in both species and plant parts. As for plant species tested, canola was more effective in the uptake of Cu, Cd, Pb and Zn. Root heavy metal uptake of both species was higher than shoot heavy metal uptake.

CULTIVAR VARIATION IN TOTAL NITROGEN UPTAKE IN RAPE

1977 ◽  
Vol 57 (3) ◽  
pp. 619-624 ◽  
Author(s):  
BAHRAM GRAMI ◽  
L. J. LaCROIX
Keyword(s):  
Brassica Napus ◽  
Total Nitrogen ◽  
Nitrogen Uptake ◽  
Seed Protein ◽  
High Protein ◽  
Brassica Napus L ◽  
Plant Parts ◽  
Vegetative Plant ◽  
Cultivar Variation ◽  
Nitrogen Contents

Summer rape (Brassica napus L.) cv. Tower contained higher nitrogen contents in the vegetative plant parts at anthesis and maturity, and higher seed protein than cv. Midas when grown under similar conditions. The high protein trait in cv. Tower was directly associated with its greater ability for the uptake and translocation of nitrogen. The differential nitrogen uptake appeared to be inherited.

Heterotic response and combining ability analysis in F1 diallel populations of Brassica napus L.

2019 ◽  
Vol 51 (6) ◽  
Author(s):  
Samrin Gul ◽  
Razi Uddin ◽  
Naqib Ullah Khan ◽  
Shahid Ullah Khan ◽  
Sardar Ali ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Combining Ability ◽  
Brassica Napus L ◽  
Combining Ability Analysis

Жирнокислотный состав масла семян селекционных линий ярового рапса (Brassica napus L.) в условиях Ленинградской области

2018 ◽  
pp. 12-17
Author(s):  
Т. В. Шеленга ◽  
А. В. Конарев ◽  
Л. П. Бекиш ◽  
Л. Ю. Новикова ◽  
И. Н. Перчук ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L

Отмечена роль Н. И. Вавилова в организации исследований исходного и селекционного материала по биохимическим признакам, определяющим пищевые, кормовые и технологические качества сельскохозяйственной продукции. Выделен перспективный материал для создания сортов рапса с улучшенными пищевыми, кормовыми и технологическими характеристиками; выявлен характер зависимости признаков качества масла от погодных условий (температура, количество осадков и др.). Изучены 50 высокоэруковых (ВЭ) и 40 низкоэруковых (НЭ) линий ярового рапса (Brassica napus L.), выращенных в условиях Ленинградской области в 2012 – 2015 гг. Содержание масла и влажность в семенах определяли методом инфракрасной спектрометрии. Жирнокислотный состав (ЖКС) масла изучали с помощью газожидкостной хроматографии с масс-спектрометрией. Установлено содержание доминирующих жирных кислот для ВЭ и НЭ образцов, а также характер влияния погодных условий на ЖКС масла, в том числе на состав его отдельных фракций. Для ВЭ образцов установлена достоверная отрицательная корреляция (r = –0,96) между содержанием эруковой кислоты и температурой воздуха и достоверная положительная (r = 0,96) с количеством осадков в первую декаду июля. Для НЭ образцов установлена достоверная отрицательная зависимость между содержанием эруковой кислоты и средней температурой воздуха в мае. Выделенные образцы с высоким содержанием олеиновой (61,4 %) и низким линолевой (7,4 %) кислот можно рекомендовать для получения безэруковых сортов рапса, масло которых пригодно для длительного хранения. Контрастные по содержанию эруковой кислоты образцы будут использованы для создания сортов ярового рапса пищевого и кормового назначения, а также для производства биодизеля.

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