Trade-offs between flowering time, plant height, and seed size within and across 11 communities of a QingHai-Tibetan flora

Plant Ecology ◽  
2010 ◽  
Vol 209 (2) ◽  
pp. 321-333 ◽  
Author(s):  
Guozhen Du ◽  
Wei Qi
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Seed Size ◽  
Trade Offs

scholarly journals Niches, rather than neutrality, structure a grassland pioneer guild

2005 ◽  
Vol 272 (1570) ◽  
pp. 1357-1364 ◽  
Author(s):  
Lindsay A Turnbull ◽  
Liz Manley ◽  
Mark Rees
Keyword(s):  
Seed Size ◽  
Adult Stage ◽  
Niche Differentiation ◽  
Competitive Dynamics ◽  
Similar Species ◽  
Adult Density ◽  
Pioneer Species ◽  
Trade Offs ◽  
Very High ◽  
Early Establishment

Pioneer species are fast-growing, short-lived gap exploiters. They are prime candidates for neutral dynamics because they contain ecologically similar species whose low adult density is likely to cause widespread recruitment limitation, which slows competitive dynamics. However, many pioneer guilds appear to be differentiated according to seed size. In this paper, we compare predictions from a neutral model of community structure with three niche-based models in which trade-offs involving seed size form the basis of niche differentiation. We test these predictions using sowing experiments with a guild of seven pioneer species from chalk grassland. We find strong evidence for niche structure based on seed size: specifically large-seeded species produce fewer seeds but have a greater chance of establishing on a per-seed basis. Their advantage in establishment arises because there are more microsites suitable for their germination and early establishment and not directly through competition with other seedlings. In fact, seedling densities of all species were equally suppressed by the addition of competitors' seeds. By the adult stage, despite using very high sowing densities, there were no detectable effects of interspecific competition on any species. The lack of interspecific effects indicates that niche differentiation, rather than neutrality, prevails.

QTL analysis on plant height and flowering time inBrassica napus

2009 ◽  
Vol 128 (5) ◽  
pp. 458-465 ◽  
Author(s):  
D. S. Mei ◽  
H. Z. Wang ◽  
Q. Hu ◽  
Y. D. Li ◽  
Y. S. Xu ◽  
...  
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Qtl Analysis

Mapping QTLs for plant height and flowering time in a Chinese summer planting soybean RIL population

Euphytica ◽  
2017 ◽  
Vol 213 (2) ◽  
Author(s):  
Yongce Cao ◽  
Shuguang Li ◽  
Xiaohong He ◽  
Fangguo Chang ◽  
Jiejie Kong ◽  
...  
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Ril Population

scholarly journals GENETIC VARIABILITY, HERITABILITY AND EXPECTED GENETIC ADVANCES OF QUANTITATIVE CHARACTERS IN F2 PROGENIES OF SOYBEAN CROSSES

2014 ◽  
Vol 15 (1) ◽  
pp. 11
Author(s):  
Lukman Hakim ◽  
Suyamto Suyamto ◽  
Eman Paturohman
Keyword(s):  
Plant Height ◽  
Seed Size ◽  
Block Design ◽  
Genetic Advance ◽  
Genetic Progress ◽  
Early Maturity ◽  
Plant Seed ◽  
Randomized Block Design ◽  
Days To Maturity ◽  
Coefficient Of Variability

The F2 progenies of crosses among three soybean varieties were evaluated with their parents at Ngale Experimental Farm, Ngawi, East Java during the dry season of 2011. The experi-ment was conducted in a randomized block design with three replications. The seeds of each F2 progenies and parents were planted in two rows of 4.5 m long. Plant spacing was 40 cm x 15 cm and each hill contained one plant. Among the characters studied, seed weight per plant, number of pods per plant and days to maturity had the highest coefficient of variability with the means of 52.6%, 48.2% and 41.9%, respectively. Whereas seed size, plant height and number of reproductive nodes had moderate values of 36.9%, 35.5% and 37.4%, respectively. Number of branches and days to flowering had the lowest variability of 11.7% and 15.3%, respectively. Number of pods per plant, days to maturity, plant height and seed size had high mean estimates of heritability coupled with high genetic advance. The genetic progress of these characters that would be obtained for one generation of selection was estimated 47.2%, 45.7%, 40.9% and 40.3%, respectively. Among the agronomic characters, plant height, number of pods per plant, seed size and days to maturity had the highest coefficient of variability associated with high heritability and genetic advance. Therefore, selection for high yielding with early maturity soybean genotypes based on plant height, number of pods per plant and seed size might be possible.

scholarly journals Dlf1, a WRKY Transcription Factor, Is Involved in the Control of Flowering Time and Plant Height in Rice

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e102529 ◽  
Author(s):  
Yuhui Cai ◽  
Xujun Chen ◽  
Ke Xie ◽  
Qikai Xing ◽  
Yawen Wu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flowering Time ◽  
Plant Height ◽  
Wrky Transcription Factor

scholarly journals MORPHOPHYSIOLOGICAL AND PRODUCTIVE RESPONSES OF SUNFLOWER VARIETIES TO IRRIGATION

2018 ◽  
Vol 31 (1) ◽  
pp. 143-150
Author(s):  
WELSON LIMA SIMÕES ◽  
MARCOS ANTONIO DRUMOND ◽  
ANDERSON RAMOS DE OLIVEIRA ◽  
SÉRGIO LUIZ GONÇALVES ◽  
MIGUEL JULIO MACHADO GUIMARÃES
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Agricultural Research ◽  
Block Design ◽  
River Valley ◽  
Semiarid Region ◽  
Local Climate ◽  
Sao Francisco River ◽  
Randomized Block Design ◽  
São Francisco River

ABSTRACT The high luminosity rates and high annual average temperatures of the Brazilian semiarid region, combined with the use of irrigation and adaptability of the sunflower crop to local climate, favor increased achene yield due to acceleration of morphophysiological processes. The objective of this work was to evaluate the morphophysiological and productive characteristics of sunflower varieties grown under drip irrigation in the Sub-Mid São Francisco River Valley. The experiment was conducted in the Experimental Field of the Brazilian Agricultural Research Corporation (Embrapa Semiarid), in Petrolina, State of Pernambuco, Brazil, in a randomized block design, with 21 sunflower varieties and four replications. The variables evaluated were flowering time, plant height, number of live leaves, stem and capitulum diameter, number of lodged and broken plants, stem curvature, relative chlorophyll index, photosynthesis, stomatal conductance, transpiration, average leaf temperature, 1000-achene weight and achene yield of the sunflower varieties. The treatments presented flowering time of 43 to 59 days after sowing, plant height of 1.0 to 1.4 m, capitulum diameter of 0.154 to 0.221 m, chlorophyll content of 30.8 to 33.98 Spad units and 1000-achene weight of 35.61 to 80.30 g. The sunflower varieties V7 and V8 stood out, with achene yields above 2,960 kg ha-1 and low number of lodged and broken plants, indicating a greater adaptability irrigation crops in the Sub-Mid São Francisco River Valley.

Effects of Maturation Environment on Seed Size and Subsequent Plant Growth in Peas (Pisum sativum)

1983 ◽  
Vol 19 (4) ◽  
pp. 333-336 ◽  
Author(s):  
K. Kant ◽  
B. Sharma ◽  
M. C. Tyagi
Keyword(s):  
Pisum Sativum ◽  
Plant Growth ◽  
Plant Height ◽  
Seed Size ◽  
Environmental Conditions ◽  
Days To Flowering ◽  
Single Location

SUMMARYMaturation of peas in cool temperatures (mean 17.5°C) at Dalang Maidan, Lahaul (in the Himalayas) led to the development of larger seeds in comparison to those of the same varieties which had matured in warmer temperatures (mean 24.5°C) at Delhi, India. The larger seeds from Lahaul, when sown at Delhi, gave rise to taller plants which came into flower earlier compared with those from the seeds matured at Delhi. Significant location ′ variety interactions were recorded for germination and plant height. Inherent variation in days to flowering could have been a major factor in these interactions. These data are of direct importance to breeders using seeds developed at more than a single location if environmental conditions differ appreciably.

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