scholarly journals Effects of Assimilate Supply and High Temperature during Grain-Filling Period on the Occurrence of Various Types of Chalky Kernels in Rice Plants (Oryza sativaL.)

2008 ◽  
Vol 11 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Tadashi Tsukaguchi ◽  
Yusuke Iida
Keyword(s):  
High Temperature ◽  
Grain Filling ◽  
Rice Plants ◽  
Grain Filling Period

scholarly journals Stay-Green Trait Assessment using the Leaf Incubation Method to Examine the Maintenance of Assimilation Rates under High Temperature Conditions during the Grain-Filling Period in Rice

2015 ◽  
Vol 18 (3) ◽  
pp. 254-266 ◽  
Author(s):  
Tohru Kobata ◽  
Miwa Shinonaga ◽  
Haruka Yoshida ◽  
Kouhei Tomisaka ◽  
Kouhei Akai
Keyword(s):  
High Temperature ◽  
Grain Filling ◽  
Stay Green ◽  
Temperature Conditions ◽  
Grain Filling Period ◽  
Incubation Method

Effect of Timing of Heat Stress During Grain Filling on Two Wheat Varieties Differing in Heat Tolerance. II. Fractional Protein Accumulation

1996 ◽  
Vol 23 (6) ◽  
pp. 739 ◽  
Author(s):  
PJ Stone ◽  
ME Nicolas
Keyword(s):  
Heat Stress ◽  
High Temperature ◽  
Grain Growth ◽  
Heat Tolerance ◽  
Grain Filling ◽  
Size Exclusion ◽  
Protein Accumulation ◽  
Wheat Varieties ◽  
Grain Filling Period ◽  
Very High

Short periods of very high temperature (> 35�C) are common during the grain filling period of wheat, and can significantly alter mature protein composition and consequently grain quality. This study was designed to determine the stage of grain growth at which fractional protein accumulation is most sensitive to a short heat stress, and to examine whether varietal differences in heat tolerance are expressed consistently throughout the grain filling period. Two varieties of wheat differing in heat tolerance (cvv. Egret and Oxley, tolerant and sensitive, respectively) were exposed to a short (5 day) period of very high temperature (40�C max, for 6 h each day) at 5-day intervals throughout grain filling, from 15 to 50 days after anthesis. Grain samples were taken throughout grain growth and analysed for protein content and composition (albumin/globulin, monomer, SDS-soluble polymer and SDS-insoluble polymer) using size-exclusion high-performance liquid chromatography. The timing of heat stress exerted a significant influence on the accumulation of total wheat protein and its fractions, and protein fractions differed in their responses to the timing of heat stress. Furthermore, wheat genotype influenced both the sensitivity of fractional protein accumulation to heat stress and the stage during grain filling at which maximum sensitivity to heat stress occurred.

scholarly journals Spring barley performances in the Pannonian zone

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 499-512 ◽  
Author(s):  
Novo Przulj ◽  
Vojislava Momcilovic
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Genetic Variability ◽  
Plant Height ◽  
Water Deficit ◽  
Environmental Conditions ◽  
Spring Barley ◽  
Grain Filling ◽  
Growing Seasons ◽  
Grain Filling Period

Environmental conditions in the Pannonian zone can be characterized with moderate high temperature and partially water deficit during grain filling of spring barley, although low temperature and water deficit are possible also in period till anthesis. This study was conducted to evaluate the variation of the duration of the period from emergence to anthesis (VP), duration of grain filling period (GFP), plant height (PH), spikes number m-2 (SN), grains number spike-1 (GN), thousand grains weight (GW) and yield (YIL) in spring two-rowed barley in conditions of the Pannonian zone. All three factors; genotype, environment and the interaction GxY affected the studied traits. Average VP was 777 GDD, GFP 782 GDD, PH 78 cm, SN 523, GN 28.2, GW 43.2 g and YIL 6.26 t ha-1. Variation across varieties was higher than across growing seasons. Heritability varied from 0.66 for YIL to 0.94 for VP and GFP. This study confirmed that a sufficiently large genetic variability must be base for selecting appropriate varieties for the Pannonian zone conditions. In order to determine high yielding and quality barley extensive research in relation to breeding, variety choice for production and growing practice must be done.

scholarly journals Dynamics of phytohormones and their relationship with chalkiness of early indica rice under different post-anthesis temperature regimes

2017 ◽  
Vol 42 (1) ◽  
pp. 53-65
Author(s):  
Mohammed Humayun Kabir ◽  
Qing Liu ◽  
Yi Su ◽  
Zhigang Huang ◽  
Langtao Xiao
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Indica Rice ◽  
Grain Filling ◽  
Flag Leaves ◽  
Content Ratio ◽  
Temperature Regimes ◽  
Head Rice ◽  
Grain Filling Period ◽  
Early Indica Rice

A pot experiment on an early indica rice cv. ‘Shenyou9576’ was conducted in the net house of Hunan Agricultural University, Changsha, Hunan, PR China during the early growing season of 2013 to investigate the influence of varying temperatures on chalkiness rate, head rice rate, and phytohormones, namely indole-3-acetic acid (IAA), gibberellins (GA1 and GA4), zeatin (Z), zeatin riboside (ZR) and abscisic acid (ABA) both in flag leaves and grain endosperm during grain filling period. The treatments comprised three temperature regimes which are designated as the high (35/28oC- day/night), low (25/20oC- day/night) and natural condition as the control (35/25oC- day/night). The results showed that the maximum chalkiness rate was 61.11% under high temperature and the minimum (22.59%) under low temperature. The lowest head rice rate was 42.76% under high temperature followed by 49.91% in the control, while the highest (62.33%) under low temperature. The contents of GA1, GA4, Z and ZR were decreased gradually from 7 to 35 days after anthesis (DAA) irrespective of treatments. IAA content began to decrease from 14 DAA and continued up to 35 DAA and ABA was reduced from 28 to 35 DAA under low temperature in comparison to control and high temperature. ABA content was increased from 7 to 21 DAA and then declined at high temperature. The results showed that contents of GA1, GA4, Z, ZR were high at low temperature compared to high temperature and control. IAA content was also high during grain development period at low temperature except 7 DAA. Higher phytohormone contents were observed in endosperm than in flag leaves. Phytohormone content ratio (endosperm: flag leaves) was found highest in IAA and the lowest in GA1. A significant positive correlation was found between ABA and chalkiness rate during early to mid grain filling period, while significant negative correlations were noticed between chalkiness rate and other phytohormones during grain filling period. Correlation results revealed that increased level of ABA during early to mid grain filing period caused by high temperature was more responsible for development of chalkiness.Bangladesh J. Agril. Res. 42(1): 53-65, March 2017

Effects of High Temperature on Antioxidant Enzymes and Lipid Peroxidation in Flag Leaves of Wheat During Grain Filling Period

2006 ◽  
Vol 5 (6) ◽  
pp. 425-430 ◽  
Author(s):  
Ping LIU ◽  
Wen-shan GUO ◽  
Han-chun PU ◽  
Chao-nian FENG ◽  
Xin-kai ZHU ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Enzymes ◽  
High Temperature ◽  
Grain Filling ◽  
Flag Leaves ◽  
Grain Filling Period

Effect of high temperature on grain filling period, yield, amylose content and activity of starch biosynthesis enzymes in endosperm of basmati rice

2014 ◽  
Vol 95 (11) ◽  
pp. 2237-2243 ◽  
Author(s):  
Nisar Ahmed ◽  
Ian J Tetlow ◽  
Sehar Nawaz ◽  
Ahsan Iqbal ◽  
Muhammad Mubin ◽  
...  
Keyword(s):  
High Temperature ◽  
Amylose Content ◽  
Grain Filling ◽  
Starch Biosynthesis ◽  
Basmati Rice ◽  
Grain Filling Period

Comprehensive evaluation of high temperature tolerance of six rice varieties during grain-filling period based on key starch physicochemical indexes

LWT ◽  
2021 ◽  
pp. 111804
Author(s):  
Dongping Yao ◽  
Jun Wu ◽  
Qiuhong Luo ◽  
Hong Shen ◽  
Wen Zhuang ◽  
...  
Keyword(s):  
High Temperature ◽  
Comprehensive Evaluation ◽  
Grain Filling ◽  
Temperature Tolerance ◽  
Rice Varieties ◽  
High Temperature Tolerance ◽  
Grain Filling Period

scholarly journals Effect of high temperature on early stage of grain filling period in wheat (Triticum aestivum L.)

2017 ◽  
Vol 49 (3) ◽  
pp. 200-212
Author(s):  
Chan Seop Ko ◽  
Myung Kyu Oh ◽  
Jong Nae Hyun ◽  
Kyeong Hoon Kim ◽  
Jin Baek Kim ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
High Temperature ◽  
Early Stage ◽  
Grain Filling ◽  
Triticum Aestivum L ◽  
Grain Filling Period

Identification of the chromosomal region responsible for high-temperature stress tolerance during the grain-filling period in rice

2013 ◽  
Vol 32 (1) ◽  
pp. 223-232 ◽  
Author(s):  
Kenta Shirasawa ◽  
Takuma Sekii ◽  
Yoshinori Ogihara ◽  
Teppei Yamada ◽  
Sachiko Shirasawa ◽  
...  
Keyword(s):  
High Temperature ◽  
Stress Tolerance ◽  
Temperature Stress ◽  
Chromosomal Region ◽  
Grain Filling ◽  
High Temperature Stress ◽  
Grain Filling Period

Effect of Timing of Heat Stress During Grain Filling on Two Wheat Varieties Differing in Heat Tolerance. I. Grain Growth

1995 ◽  
Vol 22 (6) ◽  
pp. 927 ◽  
Author(s):  
PJ Stone ◽  
ME Nicolas
Keyword(s):  
Heat Stress ◽  
High Temperature ◽  
Grain Growth ◽  
Heat Tolerance ◽  
Grain Filling ◽  
Dry Matter Accumulation ◽  
Varietal Differences ◽  
Short Period ◽  
Grain Filling Period ◽  
Very High

Short periods of very high temperature (> 35�C) are common in many of the world's wheat growing areas and can be a significant factor in reducing yield and quality of wheat. This study was designed to determine the stage at which grain growth is most sensitive to a short period of high temperature and to examine whether varietal differences in heat tolerance are expressed throughout the whole grain-filling period. Two varieties of wheat differing in heat tolerance (cvv. Egret and Oxley) were exposed to a short (5 days) period of very high temperature (40�C max. for 6 h each day) at 5-day intervals throughout grain filling, starting from 15 days after anthesis (DAA) and concluding at 50 DAA. Responses of grain dry matter accumulation and water content to high temperature were monitored throughout grain filling, and the results compared with controls maintained at 21/16�C day/night. Varietal differences in heat tolerance were expressed throughout the grain-filling period. Mature individual kernel mass was most sensitive to heat stress applied early in grain filling and became progressively less sensitive throughout grain filling, for both varieties. Reductions in mature kernel mass resulted primarily from reductions in duration rather than rate of grain filling.

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