Effect of Temperature and Storage Period on Seed Germination and Some Morphological Characteristics of Rice (Oryza sativa L.) RD 6 cultivar

2017 ◽  
Keyword(s):  
Oryza Sativa ◽  
Seed Germination ◽  
Oryza Sativa L ◽  
Morphological Characteristics ◽  
Storage Period ◽  
Effect Of Temperature ◽  
And Storage

Changes in Cytokinin Activity during Seed Germination in Rice (Oryza sativa L.)

1984 ◽  
Vol 54 (1) ◽  
pp. 1-5 ◽  
Author(s):  
SHYAMALI SAHA ◽  
P. K. NAGAR ◽  
P. K. SIRCAR
Keyword(s):  
Oryza Sativa ◽  
Seed Germination ◽  
Oryza Sativa L ◽  
Cytokinin Activity

scholarly journals Mechanism of delayed seed germination caused by high temperature during grain filling in rice (Oryza sativa L.)

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chetphilin Suriyasak ◽  
Yui Oyama ◽  
Toshiaki Ishida ◽  
Kiyoshi Mashiguchi ◽  
Shinjiro Yamaguchi ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
High Temperature ◽  
Seed Germination ◽  
Oryza Sativa L ◽  
Grain Filling ◽  
Aleurone Layer ◽  
Gene Promoters ◽  
Aba Catabolism ◽  
Amylase Genes ◽  
Transcriptional Changes

Abstract High temperature during grain filling considerably reduces yield and quality in rice (Oryza sativa L.); however, how high temperature affects seed germination of the next generation is not yet well understood. Here, we report that seeds from plants exposed to high temperature during the grain filling stage germinated significantly later than seeds from unstressed plants. This delay remained even after dormancy release treatments, suggesting that it was not due to primary seed dormancy determined during grain filling. In imbibed embryos of heat-stressed seeds, expression of abscisic acid (ABA) biosynthesis genes (OsNCEDs) was higher than in those of control seeds, whereas that of ABA catabolism genes (OsABA8′OHs) was lower. In the aleurone layer, despite no change in GA signaling as evidenced by no effect of heat stress on OsGAMYB gene expression, the transcripts of α-amylase genes OsAmy1C, OsAmy3B, and OsAmy3E were significantly down-regulated in heat-stressed seeds in comparison with controls. Changes in promoter methylation levels were consistent with transcriptional changes of ABA catabolism-related and α-amylase genes. These data suggest that high temperature during grain filling results in DNA methylation of ABA catabolism-related and α-amylase gene promoters, delaying germination of heat-stressed seeds.

Analysis of Rice Ageing Process Using Fuzzy and Graph Cut

2020 ◽  
Vol 17 (9) ◽  
pp. 4394-4397
Author(s):  
Bhawna Nigam ◽  
Anvika Sharma ◽  
B. Basavaprasad ◽  
M. Niranjanamurthy
Keyword(s):  
Structural Changes ◽  
Oryza Sativa L ◽  
Electronic Devices ◽  
Storage Period ◽  
Graph Cut ◽  
Ageing Process ◽  
Chemical Components ◽  
Experimental Errors ◽  
And Storage ◽  
Graph Cut Segmentation

Rice botanically belongs to Oryza sativa L. of Gramineae family. Rice is the significant principal foods for almost majority of the world’s population and impacts the livelihood and economy of many billion people. Though there are many well established techniques such as electronic devices, sensors, biosensors or high end instruments to study the different chemical components, sample preparation, specificity, sensitivity, accuracy and reusable issues. In order to overcome such issues, an alternate technique or method need to be developed which can replace the human intervention to avoid the experimental errors through analyzing the surface structure rather than the chemical method. Among the different changes that occurred during the ageing process, internal structure is also an important phenomenon because of the starch modification with several factors like temperature, moisture content and storage period. Hence, the objective of the study concentrates on the analyzing the structural changes to assess the age of rice through fuzzy and graph cut segmentation technique.

scholarly journals PENGARUH WADAH, SUHU DAN WAKTU SIMPAN TERHADAP PERKECAMBAHAN BENIH MENIRAN (Phyllanthus niruri L.)

2019 ◽  
Vol 12 (2) ◽  
Author(s):  
Nurul Husniyati Listyana ◽  
Rahma Widyastuti ◽  
Widyantoro Widyantoro
Keyword(s):  
Seed Germination ◽  
Storage Time ◽  
Storage Temperature ◽  
Storage Period ◽  
Raw Material ◽  
Wild Plant ◽  
Phyllanthus Niruri ◽  
Storage Container ◽  
Genetic Traits ◽  
And Storage

ABSTRACT Meniran (Phyllanthus niruri L.) is a wild plant that used extensively as a raw material for traditional medicine but has not been cultivated yet. Meniran cultivation requires the availability of quality seeds and seedlings to produce the high productivity. The ability of seeds to germinate (seed viability) after the storage period is influenced by several factors both internal and external, including seed water content, genetic traits, initial viability and packaging material, storage temperature and humidity, microorganisms, and human factors.. The study aims to determine the effect of storage containers, storage temperature and time of storage on the power of meniran seed germination. The study was conducted in March-April 2018 at the B2P2TO2T Seed Laboratory. The research design was Factorial Completely Randomized Design with 3 factors and 3 replications. The first factor was a storage container consisting of plastic, paper envelopes and aluminum foil. Second factor was a storage temperature consisting of 0 ° C, -20 ° C and -50 ° C.  The third factor was storage time which consists of 2 weeks, 4 weeks, 6 weeks, 8 weeks and 10 weeks. The results showed that the storage container and storage time had a significantly different effect on meniran seed germination. The storage time does not have a significant effect on germination. Together, the storage container, storage temperature and storage time do not have a significant effect on meniran seed germination. The interaction between the storage temperature and the storage time and the interaction between the storage container and the storage time give significantly different effects on germination. ABSTRAK Meniran (Phyllanthus niruri L.) merupakan tanaman liar yang simplisianya banyak dibutuhkan sebagai bahan baku obat tradisional namun belum dibudidayakan. Budidaya tanaman meniran memerlukan ketersediaan benih dan bibit yang bermutu untuk menghasilkan produktivitas yang tinggi. Kemampuan benih untuk berkecambah (viabilitas benih) setelah masa penyimpanan dipengaruhi oleh beberapa faktor baik internal maupun eksternal, meliputi kadar air benih, sifat genetik, viabilitas awal serta bahan pengemas, suhu dan kelembaban ruang simpan, mikroorganisme, serta faktor manusia. Penelitian bertujuan untuk mengetahui pengaruh wadah simpan, suhu simpan dan waktu simpan terhadap daya perkecambahan benih meniran. Penelitian dilaksanakan pada bulan Maret-April 2018 di Laboratorium Benih B2P2TO2T. Desain penelitian yang digunakan yaitu Rancangan Acak Lengkap Faktorial dengan 3 faktor dan 3 ulangan. Faktor 1 yaitu wadah penyimpanan yang terdiri dari plastik, kertas amplop dan aluminium foil. Faktor 2 yaitu suhu simpan yang terdiri dari 0°C, -20°C dan -50°C. Faktor 3 yaitu waktu penyimpanan yang terdiri dari 2 minggu, 4 minggu, 6 minggu, 8 minggu dan 10 minggu. Hasil penelitian menunjukkan wadah simpan dan waktu simpan memberikan pengaruh yang berbeda signifikan terhadap perkecambahan benih meniran.  Suhu simpan tidak memberikan pengaruh yang berbeda signifikan terhadap perkecambahan. Secara bersama-sama wadah simpan, suhu simpan dan waktu simpan tidak memberikan pengaruh yang berbeda signifikan terhadap perkecambahan benih meniran. Interaksi antara suhu simpan dan waktu simpan serta interaksi antara wadah simpan dan waktu simpan memberikan pengaruh yang berbeda signifikan terhadap perkecambahan.  

Effect of Water Stress on Seed Germination and Seedling Growth of Rice (Oryza sativa L.) Genotypes

2003 ◽  
Vol 2 (4) ◽  
pp. 217-222 ◽  
Author(s):  
H. Pirdashti ◽  
Z. Tahmasebi Sarvestani ◽  
GH. Nematzadeh ◽  
A. Ismail
Keyword(s):  
Oryza Sativa ◽  
Water Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Oryza Sativa L ◽  
Effect Of Water
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