Evaluation of an analytical method to identify determinants of rice yield components and protein content

2012 ◽  
Vol 83 ◽  
pp. 77-84 ◽  
Author(s):  
Yasumaru Hirai ◽  
Saruta Keisuke ◽  
Kunihiko Hamagami
Keyword(s):  
Protein Content ◽  
Analytical Method ◽  
Yield Components ◽  
Rice Yield

Development of gene-tagged markers for quantitative trait loci underlying rice yield components

Euphytica ◽  
2009 ◽  
Vol 169 (2) ◽  
pp. 215-226 ◽  
Author(s):  
Chang-Jie Yan ◽  
Song Yan ◽  
Ya-Chun Yang ◽  
Xiu-Hong Zeng ◽  
Yu-Wei Fang ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Yield Components ◽  
Rice Yield ◽  
Trait Loci

Yields and components of yield of dry beans (Phaseolus Vulgaris L.) in the United Kingdom

1978 ◽  
Vol 90 (2) ◽  
pp. 291-297 ◽  
Author(s):  
R. C. Hardwick ◽  
J. M. Hardaker ◽  
N. L. Innes
Keyword(s):  
Phaseolus Vulgaris ◽  
Protein Content ◽  
Negative Correlation ◽  
Yield Components ◽  
Crude Protein ◽  
Plant Density ◽  
Phaseolus Vulgaris L ◽  
The United Kingdom ◽  
Controlled Environments ◽  
Seedling Cold Tolerance

SummaryExotic accessions of Phaseolus vulgaris selected for seedling cold tolerance by Austin & Maclean (1972) in a test in controlled environments were grown in a field experiment at Wellesbourne in 1974. Yields of up to 4·;7 t/ha at a plant density of 34 plants/m2 were obtained. In 1975, six selected accessions were grown at 21 plants/m2 at six different sites. Mean site yields ranged from 1·0 to 3·1 t/ha. The six accessions all had better emergence and higher yields than two commercial cultivars used as controls. The genotype × site interactions for yield (and for yield components) were small. The variation in yield between accessions (from 2·0 to 2·5 t/ha) was smaller than the variation in yield between sites. Variation in yield components tended to be additive between sites, and compensatory between accessions. There was a negative correlation between crude protein content and yield across accessions; the correlation between protein content and yield across sites was not significant. Accessions differed significantly in the amount of green leaf still attached to plants at harvest. This variation was not related to maturity as judged by moisture content of the seed. There was a negative correlation across accessions between the weight of leaf per plant at harvest and harvest index (the ratio of seed weight to stem weight).

Effect of uneven emergence on rice yield, milling yield, and yield components

1994 ◽  
Vol 34 (7) ◽  
pp. 949 ◽  
Author(s):  
KA Gravois ◽  
RS Helms
Keyword(s):  
Yield Components ◽  
Management Practices ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
The United States ◽  
Growth Stages ◽  
Yield And Yield Components ◽  
Rice Yields ◽  
High Yields ◽  
Milling Yield

Establishing a uniform rice (Oryza sativa L.) stand is an important beginning to managing a rice crop and attaining high yields. Most rice management practices in the United States are timed according to rice growth stages. Non-uniform rice stands, and subsequently non-uniform growth stages, present problems for the timely application of management practices for attaining high yields. Our objective was the determination of the effects of uneven emergence on rice yield, milling yield, and yield components. Experiments were conducted in 1988 and 1989 on a Hebert silt loam (Vertic Hapludoll) at the Southeast Branch Experiment Station near Rohwer, Arkansas. Uneven emergence was simulated by delayed (18 days from emergence) interseeding of rice to achieve 0, 20, 40, 60, and 80% uneven emergence. Each experiment was planted with the cultivars Lemont (semi-dwarf) and Tebonnet (tall) and was replicated 4 times. Rice yields for the uneven emergence treatment levels were significantly less than the rice yields seeded exclusively at PD1 (planting date 1), except for the uneven emergence levels 80-20 (80% planted at PD1 and 20% planted at PD2) and 60-40 for Tebonnet, and 60-40 in 1988 for Lemont. In 1989, there was a trend for head rice yields to decrease as uneven emergence levels increased. Average panicle density and number of grains per panicle for both Lemont and Tebonnet decreased with increasing uneven emergence, indicating a failure in the typical compensatory relationship between panicle density and grain per panicle. Lemont exhibited reduced average grain weights due to uneven emergence, especially at 80-20, 60-40, and 40-60 uneven emergence levels. Harvest indices were higher for PD1 than for PD2, except at 20-80 uneven emergence level. Essentially, the later emerging rice from the second planting acted much like a weed by competing against rather than contributing to rice yields. Late interseeding to enhance poor rice stands is unlikely to produce an economic return that could be expected from an adequate initial plant stand.

Effects of Age on Celosia Cultivars

1980 ◽  
Vol 16 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Olusola Omueti
Keyword(s):  
Vitamin C ◽  
Protein Content ◽  
Yield Components ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Total Vitamin ◽  
Local Cultivar ◽  
Celosia Argentea ◽  
Total Crude Protein

SUMMARYStudies of the effects of age on yield components and nutrients status of Celosia argentea cultivars showed the highest crude protein content, total vitamin C and leaf/stem ratio in leaves harvested 5 to 7 weeks after sowing, but the highest total marketable and edible yields, as well as total crude protein, 15 weeks after sowing. The narrow-leaved local cultivar gave higher crude protein per cent and vitamin C than the broad-leaved one, but its yield of edible leaf was lower. Breeding potentials of the cultivars were highlighted.

scholarly journals Phenotypic stability of yield components in protein sunflower

Genetika ◽  
2004 ◽  
Vol 36 (3) ◽  
pp. 213-220
Author(s):  
Dijana Dijanovic ◽  
Marija Kraljevic-Balalic ◽  
Vesna Stankovic ◽  
Ivan Mihajlovic
Keyword(s):  
Protein Content ◽  
Yield Components ◽  
Inbred Lines ◽  
Regression Coefficients ◽  
Phenotypic Stability ◽  
Stability Parameters ◽  
The Third ◽  
Self Pollination

Phenotypic stability of the yield components of three sunflower (Helianthus annum L) inbred lines in their third, fourth and fifth year of self-pollination was analyzed. Stability parameters were calculated following an Eberhart and Russell (1966) model. According to regression coefficients, the investigated lines showed satisfactory stability of the protein content in seeds and weight per 1000 seeds. The line D4441 in the third year of self-pollination was identified as the most stabile one regarding protein content. As for weight per 1000 seeds, the best genotype stability was detected in the line Rs 4 I 10 in its fourth year of self-pollination.

scholarly journals Grain yield, yield components and protein content of organic spelt wheat (Triticum speltaL.) grown in different agro-ecological conditions of northern Serbia

2020 ◽  
Vol 57 (1) ◽  
pp. 1-7
Author(s):  
Bojan Vojnov ◽  
Maja Manojlović ◽  
Dragana Latković ◽  
Dragiša Milošev ◽  
Željko Dolijanović ◽  
...  
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Yield Components ◽  
Spelt Wheat ◽  
Ecological Conditions

Chemical quality parameters of maize hybrids in various FAO maturity groups as correlated with yield and yield components

2007 ◽  
Vol 55 (2) ◽  
pp. 217-225 ◽  
Author(s):  
Z. Hegyi ◽  
I. Pók ◽  
C. Szőke ◽  
J. Pintér
Keyword(s):  
Protein Content ◽  
Yield Components ◽  
Starch Content ◽  
Block Design ◽  
Close Correlation ◽  
Quality Parameters ◽  
Chemical Quality ◽  
Yield And Yield Components ◽  
Set Up ◽  
Maturity Groups

An experiment was set up at five locations in Hungary in 2005, in a randomised block design with four replications. At each location 24 hybrids were tested from each of four maturity groups (FAO 200, FAO 300, FAO 400, FAO 500). Evaluations were made of the yield average (t/ha) and the yield components of the sample ears: ear length, number of kernel rows, thousand-kernel mass and kernel/cob ratio. This was followed by chemical analysis to determine the protein, oil and starch contents of the kernels. The chemical quality parameters were recorded for almost 100 hybrids, and the correlations of the protein, oil and starch contents with yield and yield components were analysed. It was found that in all the maturity groups the yield was closely correlated with the thousand-kernel mass (0.72). In each maturity group the highest yield averages were associated with the greatest average starch contents, except for the FAO 500 group in the Szarvas location, where the development of secondary ears contributed to the achievement of the highest yield average. A very close correlation was found between the starch content and the thousand kernel mass (0.91). The variety caused greater differences in protein content than the location. This was also true for the oil content in the FAO 200 and FAO 400 groups, but only in the FAO 400 group in the case of starch content. More starch was incorporated at wetter locations, where the protein content of the samples was lower.

scholarly journals Response of rice yield and yield components to elevated [CO2]: A synthesis of updated data from FACE experiments

2020 ◽  
Vol 112 ◽  
pp. 125961 ◽  
Author(s):  
Chunhua Lv ◽  
Yao Huang ◽  
Wenjuan Sun ◽  
Lingfei Yu ◽  
Jianguo Zhu
Keyword(s):  
Elevated Co2 ◽  
Yield Components ◽  
Rice Yield ◽  
Yield And Yield Components
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