EFFECT OF DROUGHT STRESS ON PHOTOSYNTHESIS, PARTITIONING OF PHOTO-ASSIMILATES AND GRAIN YIELD IN RAPESEED CULTIVARS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

MONAJEM S.; AHMADI A.; MOHAMMADI V.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Iranian Journal of Crop Sciences Year:2011 | Volume:13 | Issue:3 (51) Page(s): 533-547

Download Full-Text

Persian Verion

View:

852

Download:

Cites:

Information Journal Paper

Title

EFFECT OF DROUGHT STRESS ON PHOTOSYNTHESIS, PARTITIONING OF PHOTO-ASSIMILATES AND GRAIN YIELD IN RAPESEED CULTIVARS

Author(s)

MONAJEM S. | AHMADI A. | MOHAMMADI V. | Issue Writer Certificate

Keywords

PARTITIONINGQ2

PHOTOASSIMILATESQ2

DROUGHT STRESSQ1

PHOTOSYNTHESISQ2

CHLOROPHYLL INDEX AND RAPESEEDQ2

Abstract

Effect of DROUGHT STRESS at flowering stage on the rate of PHOTOSYNTHESIS, PARTITIONING of PHOTOASSIMILATES and its relation with grain yield of 14 rapeseed cultivar was studied in agricultural research field, University of Tehran, Karaj, Iran, in 2007-2008 crooping season. A split plot c arrangement in randomized block design with 3 replications was used. Main plots included two regimes of irrigation (full irrigation and DROUGHT STRESS at flowering stage) and sub plots consisted 14 cultivars of rapeseed. DROUGHT STRESS was imposed at flowering stage by stopping irrigation and were rewatered when soil water potential reached -1.5 Mpa. Results showed that under full irrigation conditions PHOTOSYNTHESIS rate, transpiration and PWUE declined. Similar changes in PHOTOSYNTHESIS rate, transpiration rate and Ci concentration were observed due to water stress implying the role of stomatal limitation to PHOTOSYNTHESIS under stress conditions. Chlorophyll index increased under mild stress condition, however, as stress intensified, chlorophyll index significantly reduced. Cultivars showed significant differences for PHOTOSYNTHESIS rate under water stress and non stress conditions, however, grain yield of cultivars were affected differently by water stress. Significant correlation coefficients were not observed between PHOTOSYNTHESIS rates and grain yield under different moisture regimes. Moreover, DROUGHT STRESS at flowering stage affected PARTITIONING of PHOTOASSIMILATES between different plant organs. DROUGHT STRESS at flowering stage decreased grain yield by 51% and harvest index through increasing dry weight of leaf, stem, root, and decreasing dry weight of silique or PARTITIONING of assimilates to vegetative organs than reproductive organs. The P.F cultivar with grain yield of 3597 kg.ha-1 in full irrigation conditions and Okapi with grain yield of 1595 kg.ha-1 and greater harvest index had higher agronomic performance and grain yield.

Cites

No record.

References

No record.

Cite

APA: Copy

MONAJEM, S., AHMADI, A., & MOHAMMADI, V.. (2011). EFFECT OF DROUGHT STRESS ON PHOTOSYNTHESIS, PARTITIONING OF PHOTO-ASSIMILATES AND GRAIN YIELD IN RAPESEED CULTIVARS. IRANIAN JOURNAL OF CROP SCIENCES, 13(3 (51)), 533-547. SID. https://sid.ir/paper/57166/en

Vancouver: Copy

MONAJEM S., AHMADI A., MOHAMMADI V.. EFFECT OF DROUGHT STRESS ON PHOTOSYNTHESIS, PARTITIONING OF PHOTO-ASSIMILATES AND GRAIN YIELD IN RAPESEED CULTIVARS. IRANIAN JOURNAL OF CROP SCIENCES[Internet]. 2011;13(3 (51)):533-547. Available from: https://sid.ir/paper/57166/en

IEEE: Copy

S. MONAJEM, A. AHMADI, and V. MOHAMMADI, “EFFECT OF DROUGHT STRESS ON PHOTOSYNTHESIS, PARTITIONING OF PHOTO-ASSIMILATES AND GRAIN YIELD IN RAPESEED CULTIVARS,” IRANIAN JOURNAL OF CROP SCIENCES, vol. 13, no. 3 (51), pp. 533–547, 2011, [Online]. Available: https://sid.ir/paper/57166/en

Related Journal Papers