نتایج جستجو برای: flowering and grain filling
تعداد نتایج: 16844345 فیلتر نتایج به سال:
In order to evaluate the effects of supplementary irrigation and municipal solid waste compost on growth and yield of two chickpea cultivars under dryland condition, a field experiment was arranged in Khoramabad, Iran, in 2008-2009. The experimental design was split-split plots with randomized complete blocks with three replications. Four levels of irrigation as main plot including dryland (as ...
The present study was conducted in order to investigate the effect of salicylic acid on growth, yield and macro-elements absorption of fennel in split-plot as base on randomized complete block design (RCBD) with three replications in Tehran, Iran. Irrigation regime as main plot was undergone in 5 levels that included: I1: full irrigation, I2: cut off irrigation at stem elo...
To investigate the effect of drought stress and plant density on yield and yield components of maize KSc 301 hybrid, a two-year study (2007-2008) was carried out in Varamin Agricultural Research Center by using strip split plot randomized based on complete block design in three replications. Four water stress levels (before flowering, during flowering and grain filling stage and no stress) were...
In order to study the effects of bio fertilizers application on quantitative and qualitative yield, proline content and activity of some antioxidant enzymes in sunflower (Helianthus annus L. var. Urofelor) in different irrigation withholding levels, a factorial experiment was conducted based on randomized complete block design with three replications in research farm of faculty of Agricultur...
Modern rice cultivars have large panicle but their yield potential is often not fully achieved due to poor grain-filling of late-flowering inferior spikelets (IS). Our earlier work suggested a broad transcriptional reprogramming during grain filling and showed a difference in gene expression between IS and earlier-flowering superior spikelets (SS). However, the links between the abundances of t...
Cultivars of rice (Oryza sativa L.), especially of the type with large spikelets, often fail to reach the yield potential as expected due to the poor grain-filling on the later flowering inferior spikelets (in contrast to the earlier-flowering superior spikelets). The present study showed that the size and grain weight of superior spikelets (SS) was greater than those of inferior spikelets (IS)...
To deliver food security for the 9 billon population in 2050, a 70% increase in world food supply will be required. Projected climatic and environmental changes emphasize the need for breeding strategies that delivers both a substantial increase in yield potential and resilience to extreme weather events such as heat waves, late frost, and drought. Heat stress around sensitive stages of wheat d...
Large-panicle rice cultivars often fail to reach their yield potential due to the poor grain filling of inferior spikelets (IS). Thus, it is important to determine the causes of poor IS grain filling. In this study, we attempted to identify whether inferior grain filling of large panicles is restricted by superior spikelets (SS) and their physiological mechanism. SS were removed from two homozy...
In order to study the relationship between grain filling rate, duration and leaf relative water content (RWC) and yield, an experiment was conducted at Rice Research Institute of Iran, as a randomized block design in Split Plot with 3 replications, in 2006. 5 irrigation levels as main factor (Continuously flooded, days after water banishment, 5, 8 and 11 day intervals immediately after 10 days ...
partitioning of photoassimilates between the sinks is one of the most important physiological processes related to the yield of crops which are affected by drought stress. therefore, the effect of drought stress in flowering and grain filling stages, on the percentage partitioning of photoassimilates among different organs was studied in 14 rapeseed cultivars in a split plot experiment based on...
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