scholarly journals Some Observations on the Root Development as Related to the Growth of the Aerial Part of Rice Plant Treated with Shading and Nitrogen Application into Lower Part of Furrow Slice.

1961 ◽  
Vol 29 (2) ◽  
pp. 199-201
Author(s):  
Yoshiyuki KOMATSU
Keyword(s):  
Root Development ◽  
Rice Plant ◽  
Aerial Part ◽  
Nitrogen Application

scholarly journals Cultivar Difference in the Response of Root System to Nitrogen Application in Rice Plant.

1993 ◽  
Vol 62 (3) ◽  
pp. 447-455 ◽  
Author(s):  
Saneaki TANAKA ◽  
Akira YAMAUCHI ◽  
Yasuhiro KONO
Keyword(s):  
Root System ◽  
Rice Plant ◽  
Nitrogen Application ◽  
Cultivar Difference

The effect of nitrogen application time on Calrose rice growth and yield in south-eastern Australia

1985 ◽  
Vol 25 (1) ◽  
pp. 183 ◽  
Author(s):  
PE Bacon
Keyword(s):  
Grain Yield ◽  
Rice Plant ◽  
Poor Response ◽  
Growth And Yield ◽  
Nitrogen Application ◽  
Application Time ◽  
Average Yield ◽  
Crop Response ◽  
The Poor ◽  
Eastern Australia

The effects of nitrogen application time on growth and yield of rice cv. Calrose were studied in a series of three experiments between 1976 and 1980. In one experiment, in which a combine-sown rice crop received three flood irrigations prior to permanent flood, rice plant growth and grain yield were increased significantly by reducing the interval between fertilization and permanent flood. The poor response to fertilization several irrigations prior to permanent flood was attributed to nitrogen losses following sequences of nitrification and denitrification. Maximum grain yield usually occurred when fertilizer was applied at permanent flood (average of three experiments, 860 g/m2 (8.6 t/ha). Fertilization at tiliering had little effect on crop response; average yield was 8.0t/ha, while unfertilized plots yielded 7.4 t/ha. In all experiments fertilization during the period 0- 10 days after panicle elongation resulted in very rapid nitrogen uptake, leading to an average grain yield (8.3 t/ha) which approached that obtained from plots topdressed at permanent flood. Fertilization more than 14 days after panicle elongation did not significantly increase yield.

scholarly journals AGRONOMIC PERFORMANCE AND YIELD OF RADISH CULTIVARS

2019 ◽  
Vol 6 (3) ◽  
pp. 6-11
Author(s):  
Romário Da Silva Moreira ◽  
Marlei Rosa dos Santos ◽  
Ronildo Almeida de Sousa ◽  
Rubenalto Da Silva Almeida ◽  
Francisco De Assis Gomes Junior ◽  
...  
Keyword(s):  
High Temperature ◽  
Experimental Design ◽  
Root Development ◽  
Aerial Part ◽  
Dry Mass ◽  
Root Diameter ◽  
Agronomic Performance ◽  
Tropical Regions ◽  
Number Of Leaves ◽  
Short Days

The radish is a Brassicaceae with small size, adapted to regions with mild temperatures between 13 and 20 °C and short days. However, there are cultivars adapted to high-temperature conditions, which has allowed the cultivation of this tuberous vegetable throughout the year, even in tropical regions. The present work had as objective evaluate the agronomic performance and yield of six cultivars of radish, in Uruçuí - PI. The experimental design was in randomized blocks, with four replicates and six cultivars. Harvest was performed according to the cycle of each cultivar. Number of leaves per plant, fresh and dry mass of shoot and root, diameter, and root length and yield were evaluated. The cultivars Margaret Queen and Crimson Gigante presented better root development, both in diameter and length, and obtained higher productivity per ha, being these two the most indicated for the region. The Sparkler cultivar was one of the ones that produced the highest fresh mass of the aerial part, but it obtained lower commercial roots yield, being the least indicated for the municipality of Uruçuí-PI.

scholarly journals Pengaruh Hormon Asam Indol Asetat yang Dihasilkan Azospirillum sp. terhadap Perkembangan Akar Padi

2016 ◽  
Vol 3 (2) ◽  
pp. 66 ◽  
Author(s):  
Puji Lestari ◽  
Dwi N. Susilowati ◽  
Eny I. Riyanti
Keyword(s):  
Root Growth ◽  
Plant Height ◽  
Root Development ◽  
Close Association ◽  
Rice Variety ◽  
Growth Period ◽  
Nitrogen Application ◽  
Rice Culture ◽  
Iaa Production

<p>Free-living bacteria of the<br />genus Azospirillum live in close association with rice roots.<br />This bacteria produced indole acetic acid (IAA), a plant<br />growth hormon, to the environment. IAA was isolated from<br />cultures of Azospirillum strains and investigated for its effect<br />on root development and plant height of rice variety IR64 in<br />vitro. Rice cultures of variety IR64 were grown in vitro and<br />inoculated with cultures of Azospirilllum. Production of IAA<br />by the bacterium during its growth period in rice culture medium<br />containing different levels of nitrogen was observed.<br />Results of the experiment showed that strains Azospirillum<br />Az15 and Az44 had a high ability to produce IAA, i.e., 57.93<br />μg/ml at 12 days after incubation (DAI) and 40.42 μg/ml at 7<br />DAI, respectively. The IAA production pattern of Azospirillum<br />Az15 and Az44 in the liquid medium were fluctuative<br />until the end of the incubation period, while that of the strain<br />Az7 was linier. Strain Az7 gave a better effect on the root<br />development and plant height than strains Az15 and Az44.<br />Treatment combination of strain Az7 and 100% nitrogen gave<br />highest root development. High level of nitrogen increased<br />IAA content in the uninoculated culture, while low IAA<br />content on the inoculated one. Inoculation the culture with<br />strain Az7 together with 50% nitrogen application resulted in<br />the IAA content, root dry weight, root length, fiber root number,<br />and plant height as high as those on cultures containing<br />100% nitrogen (1 mM NH4NO3) without inoculation. Inoculation<br />of rice culture with Azospirillum is expected to reduce<br />nitrogen application on rice IR64 by the IAA production as<br />indicated by significant changes in the root growth and<br />development. A higher concentrations of IAA tend to give<br />better effects on the root growth and development of rice<br />IR64.</p>

Localization of acid phosphatases in root cap of rice plant

1991 ◽  
Vol 49 ◽  
pp. 224-225
Author(s):  
Y. R. Chen ◽  
Y. F. Huang ◽  
W. S. Chen
Keyword(s):  
Rice Plant ◽  
Developmental Stages ◽  
Uranyl Acetate ◽  
Root Cap ◽  
Plant Tissues ◽  
Acid Phosphatases ◽  
Root Tips ◽  
Buffer Solution ◽  
Cacodylate Buffer ◽  
Ethanol Series

Acid phosphatases are widely distributed in different tisssues of various plants. Studies on subcellular localization of acid phosphatases show they might be present in cell wall, plasma lemma, mitochondria, plastid, vacuole and nucleus. However, their localization in rice cell varies with developmental stages of cells and plant tissues. In present study, acid phosphatases occurring in root cap are examined.Sliced root tips of ten-day-old rice(Oryza sativa) seedlings were fixed in 0.1M cacodylate buffer containing 2.5% glutaraldehyde for 2h, washed overnight in same buffer solution, incubated in Gomori's solution at 37° C for 90min, post-fixed in OsO4, dehydrated in ethanol series and finally embeded in Spurr's resin. Sections were doubly stained with uranyl acetate and lead citrate, and observed under Hitachi H-600 at 75 KV.

In vivo anti-inflammatory and hepatoprotective of aerial part of Silene villosa

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
HS Yusufoglu ◽  
AI Foudah ◽  
A Alam ◽  
GA Soliman
Keyword(s):  
Aerial Part ◽  
Anti Inflammatory
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