scholarly journals Studies on the Form of Plant in Rice Varieties with Particular Reference to the Efficiency in Utilizing Sunlight. : I. The significance of extinction coefficient in rice plant communities.

1962 ◽  
Vol 30 (4) ◽  
pp. 329-333 ◽  
Author(s):  
Ken-ichi HAYASHI ◽  
Hiroshi ITO
Keyword(s):  
Plant Communities ◽  
Extinction Coefficient ◽  
Rice Plant ◽  
Rice Varieties

scholarly journals APPLICATION OF TRAP BARRIER SYSTEM COMBINED WITH CAGE TRAP FOR CONTROLLING RATS IN RICE FIELD

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Hastin Wulan Sekarweni ◽  
Yulia Pujiastuti ◽  
Siti Herlinda
Keyword(s):  
Rice Plant ◽  
Rice Field ◽  
Rice Yield ◽  
Research Area ◽  
Yield Reduction ◽  
Rice Varieties ◽  
Rice Plants ◽  
Number Of Males

Rice-field rat is a main pest of rice. Yield reduction caused by rat is quite high, because rats attack rice plant at all stages. One of the efforts applied to control rats is by using Trap Barrier System combined with cage trap. The objective of this research was to identify species of rat attacking rice plants and investigate the presence of  rat by their footprints. The experiment was conducted in Jalur 6  Village Sumber Mulya, Sub-district  Muara Telang,  District Banyuasin, South  Sumatra. One hectare of farmer’s rice field, divided into 3 sub-plot. Each sub-plot was planted with variety paddy of Inpari 22 (sub-plot A), Inpari 33 (sub-plot B), and Inpari 43 (sub-plot C). The number of cage traps was 6 traps per sub-plot. Observations were made 7 times, with an interval of 10 days. Results showed species of trapped rats in the research area was Rattus argentiventer, in which number of males was higher than females. Morphologically, the size of males were bigger than female. Number of footprints did not reperesentative the number of trapped rats. Inpari 43 variety was more preferred by rats because damage intensity was the highest than other two rice varieties.

scholarly journals Development of the PARMS marker of the TAC1 gene and its utilization in rice plant architecture breeding

Euphytica ◽  
2021 ◽  
Vol 217 (3) ◽  
Author(s):  
Ju Gao ◽  
Haifu Liang ◽  
Juan Huang ◽  
Dongjin Qing ◽  
Hao Wu ◽  
...  
Keyword(s):  
Rice Plant ◽  
Plant Architecture ◽  
Molecular Design ◽  
High Yield ◽  
Amplification Refractory Mutation System ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Key Factor ◽  
Tiller Angle ◽  
The Ideal

AbstractThe ideal plant architecture is a new strategy for super high yield breeding of rice. Tiller angle is an important plant architecture character of rice. A reasonable tiller angle is a key factor for the ideal plant architecture and achieving high-yield breeding. Molecular design breeding is the most potential new direction of crop breeding in the future. The development of accurate and efficient functional molecular markers of target trait genes is crucial for molecular design breeding. The TAC1 (Tiller Angle Controlling) gene is the primary gene that regulates tiller angle in rice. This gene can be used to improve the compact plant architecture of indica and japonica rice varieties. The SNP variation from A to G at the fourth intron 3′ splicing point in TAC1 changes plant architecture. Based on the SNP variation, PM-TAC1 was successfully developed as a fluorescent functional molecular marker, via the penta-primer amplification refractory mutation system. Ninety-three rice materials were genotyped using this marker, and the marker was effectively used in rice plant architecture breeding. The successful development of this marker will contribute to the molecular breeding of rice plant architecture.

scholarly journals Pengaruh Intensitas Cahaya terhadap Pertumbuhan dan Hasil Beberapa Varietas Padi

2020 ◽  
Vol 4 (1) ◽  
pp. 210-218
Author(s):  
Dian Utami ◽  
Agus Halim ◽  
Cut Nur Ichsan
Keyword(s):  
Climate Change ◽  
Light Intensity ◽  
Plant Height ◽  
Rice Plant ◽  
Block Design ◽  
Grain Weight ◽  
Growth And Yield ◽  
Food Plants ◽  
Yield Potential ◽  
Rice Varieties

Abstrak. Tanaman padi merupakan salah satu komoditas pangan di dunia yang terkena dampak perubahan iklim global. Perubahan iklim menyebabkan perubahan pada pola musim, sehingga petani sulit untuk memprediksikan waktu tanam. Hal ini akan menimbulkan pengaruh negatif terhadap produktivitas tanaman pangan, terutama pada tanaman padi. Penelitian ini bertujuan untuk mengetahui pertumbuhan dan produktivitas hasil beberapa varietas padi pada intensitas cahaya yang berbeda.Penelitian ini menggunakan Rancangan Petak Terpisah (RPT) pola RAK 2x3 dengan 3 ulangan sehingga terdapat 6 kombinasi perlakuan. Hasil penelitian menunjukkan bahwa perlakuan intensitas cahaya berpengaruh sangat nyata terhadap jumlah malai. Perlakuan intensitas cahaya juga berpengaruh nyata terhadap tinggi tanaman umur 8 dan 9 MST, jumlah anakan umur 4, 5, 6, 7, 8, dan 9 MST, berat gabah per rumpun dan potensi hasil per hektar. Sedangkan perlakuan varietas menunjukkan pengaruh yang sangat nyata terhadap tinggi tanaman umur 4, 5, 7, dan 8 MST, umur berbunga, umur panen, panjang malai, berat 1000 butir, berat gabah per rumpun, dan potensi hasil per hektar. Perlakuan varietas juga berpengaruh nyata terhadap tinggi tanaman umur 6 dan 9 MST, jumlah anakan umur 4, 5, 6, 7, 8, dan 9 MST, serta jumlah malai.Hasil penelitian menunjukkan pertumbuhan dan hasil tanaman padi terbaik terdapat pada perlakuan intensitas cahaya tinggi (4179 foot-candles) dengan varietas terbaik adalah Sanbei.Effect of light intensity on growth and yield of some varieties of rice plantAbstract. Rice plant is one of the world's food commodities affected by global climate change. Climate change causes changes in season patterns, so farmers are difficult to predict planting time. It will have a negative effect on the productivity of food plants, especially in rice plant. This study aimed to know the growth and productivity of several rice varieties at different light intensity.This research using Split Plot Design (RPT) with randomized block design factorial patterns 2x3 with 3 replications so that there are 6 combination of treatment. The results showed that the light intensity had a very significant effect on number of panicles. Light intensity treatment also had significant effect on plant height aged 8 and 9 weeks after planting (WAP), number of tillers aged 4, 5, 6, 7, 8, and 9 WAP, grain weight per hill and yield potential per hectare. The varieties treatment showed very significant effect on plant height 4, 5, 7, and 8 WAP, flowering age, harvest age, panicle length, 1000 grain weight, grain weight per clump, and yield potential per hectare. Varietal treatment also had significant effect on plant height aged 6 and 9 WAP, number of tillers aged 4, 5, 6, 7, 8, and 9 WAP, and number of panicles.The results showed the best growth and yield of rice plant found in high intensity light treatment (4179 foot-candles) with the best varieties is Sanbei.

scholarly journals Rapid Screening of Berseem Clover (Trifolium alexandrinum) Endophytic Bacteria for Rice Plant Seedlings Growth-Promoting Agents

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
H. Etesami ◽  
H. Mirsyedhosseini ◽  
H. A. Alikhani
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Rice Plant ◽  
Root Colonization ◽  
Trifolium Alexandrinum ◽  
Rice Varieties ◽  
Single Strain ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Berseem Clover

A simple screening method to detect berseem clover (Trifolium alexandrinum) endophytic bacteria for rice plant growth-promoting agents on the basis of a root colonization bioassay and a plant growth promoting trait is characterized. Firstly, 200 isolates (80 endophytes and 120 rhizospheric isolates) isolated from berseem clover were inoculated as 10 mixtures of 20 strains each on two rice varieties under gnotobiotic conditions. Then, the reisolated endophytic strains from two rice varieties were characterized for plant growth promoting (PGP) traits. Secondly, the colonization and growth promoting effects of endophytic strains were compared in inoculated rice plantlets as single-strain inoculants. A significant relationship among indole-3-acetic acid (IAA) producing isolates, the size of root colonization, and plant growth was observed. Our results suggest that the ability of IAA production by the endophytic bacteria which may have a stimulatory effect on plant development may be the first plant growth promoting trait for screening bacteria isolated from clover plant for rice plant growth promoting agents. In addition, this study indicates that the selected bacterial isolates based on their IAA producing trait have the potential for PGP and more colonization of rice plant.

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