Yield response of narrow-leafed lupin plants to variations in pod number

1998 ◽  
Vol 49 (1) ◽  
pp. 63 ◽  
Author(s):  
J. A. Palta ◽  
C. Ludwig
Keyword(s):  
Seed Size ◽  
Seed Yield ◽  
Plant Density ◽  
Yield Response ◽  
Seed Number ◽  
Subsequent Removal ◽  
Seed Filling ◽  
Specific Number ◽  
Pod Number ◽  
Number Of Seeds

The effect of pod number on the seed yield and components of seed yield was examined for narrow-leafed lupin (Lupinus angustifolius L.) grown at a plant density of 36 plants/m2 in both the glasshouse and the field. Diflerent numbers of pods per plant in the glasshouse-grown lupin were generated by the application of N6-benzylaminopurine (BAP) to a specific number of flowers to ensure artificially that they set pods, and the subsequent removal of the remaining untreated flowers. Pod number ranged from 6 to 65 pods/plant in the glasshouse and was naturally distributed from 2 to 22 pods/plant in the field. Increases in seed yield per plant occurred as pod number per plant increased from 2 to 30 pods. No further increases in seed yield resulted when pod number per plant increased from 30 to 55 pods. Seed yield per plant was depressed as pod number increased from 55 to 65 pods. Seed size fell as pod number per plant increased over 20 pods and was less affected once the number of seeds per pod was reduced. The reduction in seed number per pod resulted from an increase in the number of seeds that aborted during seed filling. The data suggest that at a plant density of 36 plants/m2 there is potential for improving seed yield per plant by increasing the number of pods that reach maturity, provided it does not exceed 30 pods/plant. However, if consideration is given to producing large seeds, often preferred by buyers, the number of pods per plant should not exceed 20 pods.

THE EFFECT OF ENVIRONMENT, APEX EXCISION AND FLOWER REMOVAL ON FERTILITY COMPONENTS OF FABA BEANS (Vicia faba L.)

1984 ◽  
Vol 64 (1) ◽  
pp. 95-103 ◽  
Author(s):  
G. G. ROWLAND ◽  
G. DUC ◽  
J. PICARD
Keyword(s):  
Vicia Faba ◽  
Seed Yield ◽  
Seed Number ◽  
Vicia Faba L ◽  
Faba Beans ◽  
Pod Number ◽  
Number Of Seeds

An experiment was conducted at Dijon, France and Saskatoon, Canada to determine if apex excision or flower removal had an effect on ovule fertilization. Two lines of faba beans, cvs. Strube and 370, showed no effect of apex excision or flower removal on the frequency of ovule fertilization. The fertilization frequency, which averaged 55% for the experiment, was 10% higher at Dijon than Saskatoon and 30% higher in Strube than 370. Young-pod number, pod number, seed number and seed yield were all greater at Dijon. The abortion of fertilized flowers was high for all treatments and lines but particularly so in Strube with no flower removal. The data indicated that abortion was occurring at the pod level and not the seed level, suggesting that the average number of seeds per pod could be increased if the ovule fertilization frequency per flower could be improved.Key words: Vicia faba, fertilization frequency, fertility components, apex excision.

scholarly journals Soybean Seed Yield Response to Plant Density by Yield Environment in North America

2019 ◽  
Vol 111 (4) ◽  
pp. 1923-1932 ◽  
Author(s):  
Walter D. Carciochi ◽  
Rai Schwalbert ◽  
Fernando H. Andrade ◽  
Geomar M. Corassa ◽  
Paul Carter ◽  
...  
Keyword(s):  
North America ◽  
Seed Yield ◽  
Plant Density ◽  
Soybean Seed ◽  
Yield Response

Physiology of growth and seed production in Lupinus angustifolius L. III. Effects of defoliation and lateral branch excision on dry matter and seed production at different growth temperatures

1984 ◽  
Vol 35 (4) ◽  
pp. 511 ◽  
Author(s):  
RW Downes ◽  
JS Gladstones
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Dry Matter ◽  
Reproductive Investment ◽  
Stem Growth ◽  
Lupinus Angustifolius ◽  
Yield Response ◽  
Vegetative Development ◽  
Pod Number ◽  
Cool Conditions

Plants of Lupinus angustifolius cv. Unicrop were raised at 27/22 or 21/16�C dayhight temperatures until flowering. They were then either grown on to maturity at these conditions or moved to the other regime. Branches were removed as they started to develop and leaves were removed at the start of flowering so that 0, 3, 6, 9, 12 upper leaves or all 21 leaves were retained. Conditions before flowering determined potential pod number. Defoliation treatments revealed that under favourably cool conditions all leaves contributed to seed yield but in treatments involving 27/22'C there was no seed yield response to more than about six leaves, emphasizing the significance of environmental conditions rather than current assimilate on pod set and other yield components. In another experiment, plants were raised to flowering at 27/22, 21/16 or 15/10�C before flowering, when all were moved to 21/16�C. Half the plants were allowed to develop branches and on the remainder branch buds were removed. Branch and stem growth appeared to provide severe competition for the development of the primary inflorescence. Though branching was much more pronounced in plants at 15/10�C before flowering than in other treatments, vegetative development exceeded reproductive investment and harvest index was low under these conditions. It was suggested that there appears to be a need to develop and evaluate unbranched or less-branched lupin genotypes.

The optimum foliar zinc source and level for improving Zn content in seed of chickpea

2015 ◽  
Vol 38 (6) ◽  
Author(s):  
Nihal Kayan ◽  
Nurdilek Gulmezoglu ◽  
Mehmet Demir Kaya
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Harvest Index ◽  
Foliar Application ◽  
Seed Number ◽  
Plant Seed ◽  
Zn Content ◽  
Pod Number

The comparative effect of 0, 0.2, 0.4, 0.6 and 0.8% Zn levels of zinc chelate (Zn-EDTA; 8% Zn) and zinc sulfate (23% Zn) applied as foliar sprays for assuaging zinc deficiency of chickpea cv. Gökçe was evaluated under field condition. The sprays were applied on the plants before blooming stage during 2012 and 2013 growing seasons and seed yield, yield components like plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and mineral concentrations (nitrogen, phosphorus, zinc and iron) in seeds were investigated. Plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and seed yield were investigated. The results showed that increased zinc doses caused an increase in Zn content of seed, while seed yield was not affected similarly. In general, plant height, pod number and seed number per plant increased by the application of zinc. Lower dose of Zn-EDTA and higher dose of ZnSO<sub>4</sub> gave higher yield components. Seed weight, harvest index and seed yield were not significantly influenced by Zn sources and doses; however, mineral concentration of seeds enhanced when Zn doses were increased. It was concluded that foliar application of zinc resulted in an increase in seed mineral contents rather than seed yield of chickpea. The dose of 0.6% with Zn-EDTA was the optimum combination for Zn enrichment in seed of chickpea.

Irrigation and Nitrogen Studies in s. 23 Ryegrass Grown for Seed: 1. Growth, Development, Seed Yield Components and Seed Yield

1977 ◽  
Vol 88 (3) ◽  
pp. 605-614 ◽  
Author(s):  
P. D. Hebblethwaite
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Dry Matter ◽  
Field Experiments ◽  
Unit Area ◽  
Yield Response ◽  
Seed Yield Components ◽  
Seed Yields ◽  
Number Of Seeds

SUMMARYThe effects of irrigation and nitrogen on S. 23 perennial ryegrass grown for seed were investigated in a series of field experiments from 1972 to 1974. Irrigation significantly increased seed yield by 16% in 1972 and 52% in 1974 but had no effect in the wet year of 1973. In 1972 maximum deficit reached 110 mm at the end of July and coincided with anthesis. Consequently the yield response was due to an increase in number of seeds per unit area and no other seed yield component was affected. In 1974 peak deficit also reached about 100 mm but started to build up rapidly very early in the season and had reached 80 mm by the time that the first ears emerged. Consequently the yield response was due to increases in number of fertile tillers, number of seeds per unit area and 1000-seed weight.Irrigation had no significant effect on number of florets or seeds, except in 1974 when percentage of florets which produced seed was increased by 2%.Irrigation had some effect on threshed straw yields, total dry matter, harvest index and total number of tillers but where this occurred the response was much smaller than that of seed yield which indicates that irrigation had greater effects on the reproductive development of the crop than on yield of dry matter and tillering patterns. Increasing the quantity of nitrogen from 0 to 80 kg/ha increased seed yields, all seed yield components except 1000-seed weight, threshed straw yields and total dry matter and number of tillers at most sampling dates. Increasing the quantity of nitrogen from 80 to 160 kg/ha had little further effect on the above components except in 1972 where seed yields were significantly decreased.In 1972 number of florets was increased and percentage of florets which produced seed decreased with increasing quantities of nitrogen.

scholarly journals Response of Canola Advanced Lines to Delay Plantings upon Late Season Drought Stress

2017 ◽  
Vol 1 ◽  
pp. 307
Author(s):  
Amir Hosein Shirani Rad ◽  
Nasser Shahsavari ◽  
Nadia Safavi Fard
Keyword(s):  
Drought Stress ◽  
Seed Yield ◽  
Seed Weight ◽  
Planting Date ◽  
Stress Conditions ◽  
Seed Number ◽  
Plant Seed ◽  
Late Season ◽  
Formation Stage ◽  
Pod Number

     In order to evaluation of canola advanced lines response to delay plantings under late season drought stress conditions, an experiment was carried out in a factorial split-plot arrangement based on RCBD with three replications during two years (2012-2014) in Karaj of Iran. Treatments were; (1): Planting date in two levels (16 October and 1 November), (2): irrigation, in two levels (I1: normal irrigation as control and I2: restricted irrigation after pod formation stage) as main plots and (3): twelve oilseed rape genotypes as sub plots such as BAL2, BAL1, BAL3, BAL6, BAL8, BAL9, BAL11, BAL15, L72, R15, L109 and Okapi. The interaction effects of planting date, irrigation and genotype on pod number per plant, seed number per pod, 1000-seed weight, seed yield, and oil yield were significant at 1% level probability. The maximum seed yield under planting at the appropriate time (16 October), normal irrigation and drought stress conditions (restricted irrigation after pod formation stage) was observed in Okapi and L109, respectively). Among genotypes, R15 line under delay planting (1 November) and both normal irrigation and drought stress conditions (restricted irrigation after pod formation stage) showed the maximum seed yield.

scholarly journals THE INFLUENCE OF COMPLEX FERTILIZERS AND GROWTH REGULATOR ON SEED PRODUCTIVITY OF AWNLESS BROME

2021 ◽  
Vol 212 ◽  
pp. 33-39
Author(s):  
A. P. Eryashev ◽  
◽  
A. A. Kozlova ◽  
P. A. Eryashev ◽  
◽  
...  
Keyword(s):  
Seed Yield ◽  
Maximum Mass ◽  
Seed Number ◽  
Seed Productivity ◽  
Urban District ◽  
Factor B ◽  
Time Of Application ◽  
The Republic ◽  
Spraying Plants ◽  
Number Of Seeds

The article presents results of the experiments carried out on leached black soils of the Republic of Mordovia to identify the effect of liquid complex fertilizers and Albit on awnless brome seed productivity. For this purpose, a two-factor field experiment was laid on crops of awnless brome on the experimental field No. 1 of OAO “Mordoviyagosplem” in Ozerny village of urban district of Saransk city in 2018 - 2020 according to the following scheme: Factor A – Time of application of liquid complex fertilizers and Albit. 1 - At the beginning of spring growth, 2 - In the phase of stalk-shooting, 3 - In the phase of spring growth + in the phase of stalk-shooting. Factor B - Liquid complex fertilizers and Albit. 1. - Without usage of liquid complex fertilizers and Albit (control). 2. - Megamix-profi. 3. - Megamix nitrogen. 4 - Albit. The results of the research revealed that the height of generative shoots (99 - 105 cm) and the length of panicles (14.6 - 16.9 cm) did not change significantly in case of application of fertilizers and Albit; the maximum number of inflorescences was, in comparison with the control, in case of application of Megamix-profi (28.4 %), Megamix-nitrogen (28.9 %), Albit (27.8 %) at the time of spring growth and at the beginning of stalk-shooting with Albit application ( 30.6 %); the usage of Megamix - profi in the phase of stalk-shooting and growth + stalk-shooting led to a greater seed number in inflorescences (68.2 and 68.6 %). Albit contributed to an increase of the number of generative shoots at all periods of application (141, 137, 144 pieces / m2); the largest number of seeds in an inflorescence was noted when spraying plants with Megamix-profi and Albit at the time of spring growth (101.3 and 100.4 pcs.), Megamix - nitrogen – in the phase of stalk-shooting (101.6 pcs.); the application of Megamix-nitrogen at the time of spring growth promoted the maximum mass of 1,000 seeds (4.17 g); spraying with Megamix-nitrogen (531 - 466 kg / ha) and Albit (507 - 466 kg / ha)at the beginning of spring growth and shooting, as well as with Megamix-profi (508 kg / ha) in the phase of stalk-shooting led to the maximum seed yield , with an advantage over the control by 35.1 - 29.0 %; 18.6 - 17.8 % and 29.2 %

Adaptation of lentil (Lens culinaris Medik) to short season Mediterranean-type environments: response to sowing rates

1998 ◽  
Vol 49 (7) ◽  
pp. 1057 ◽  
Author(s):  
K. H. M. Siddique ◽  
S. P. Loss ◽  
K. L. Regan ◽  
D. L. Pritchard
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Plant Density ◽  
Germination Percentage ◽  
Yield Response ◽  
Individual Plant ◽  
Asymptotic Model ◽  
Growing Conditions ◽  
The Cost ◽  
Seed Yields

The growth and seed yield response of lentil (cv. Digger) to sowing rate (20-120 kg/ha) was studied at 13 sites over 3 seasons in the cropping regions of south-western Australia. The economic optimum plant density was estimated by fitting an asymptotic model to the data and calculating the sowing rate above which the cost for additional seed was equivalent to the revenue that could be achieved from the extra seed yield produced, assuming a 10% opportunity cost. On average across all sites and seasons, only 51% of sown seeds emerged. Increasing sowing rate resulted in greater dry matter production at ˚owering and maturity, and fewer pods per plant. Harvest index (0·31-0·36), number of seeds per pod (1·13-1·84), and mean seed weight (2·9-3·6 g/100 seeds) remained relatively stable with changes in sowing rate. The asymptotic models fitted to seed yields accounted for 1-73% of the total variance in the data, except at one site where a model could not be found to provide an adequate fit to the data. In addition to this site, another 5 sites were excluded from further consideration where the percentage of variance accounted for was <25% or the predicted optimum densities and seed yield potentials were well beyond the range of the data. The economic optimum of the remaining 7 sites ranged from 96 to 228 plants/m2, with a mean of 146 plants/m2. These results suggest that lentil yields may be improved by increasing sowing rates beyond those currently targeted in southern Australia (100-125 plants/m2). On the basis of these results, targeting a density of about 150 plants/m2 by using a sowing rate of approximately 90-110 kg/ha is recommended, depending on mean seed weight and germination percentage of the seed. Even higher sowing rates may be optimum where the growing conditions are unfavourable and individual plant growth is limited.

Analysis of morphological characters inter-relationships in the germplasm of mungbean [Vigna radiate (L.) Wilezek] in the hot arid climate

2016 ◽  
Vol 39 (1) ◽  
Author(s):  
Om Vir ◽  
A. K. Singh
Keyword(s):  
Genetic Variability ◽  
Short Duration ◽  
Seed Yield ◽  
Block Design ◽  
Morphological Characters ◽  
Cluster Number ◽  
Number Of Clusters ◽  
Days To Maturity ◽  
Pod Number ◽  
Number Of Seeds

The 38 indigenous and exotic accessions of mungbean were evaluated in a randomized complete block design with three replicates during <italic>summer</italic> and <italic>kharif</italic> seasons of fragile climate of Rajasthan to estimate the presence of genetic variability, inter-characters associations, to identify a suitable short duration accession for cultivation during <italic>summer</italic> and to compare the relative performance of the genotypes in two seasons. The high degree of genetic variability was estimated during both seasons for seed yield per plant (g), 100-seed weight (g.), number of seeds per pod, number of pods per plant, number of pods per cluster, number of branches per plant, number of clusters per plant, plant height (cm.), number of days to 50% flowering and number of days to maturity. The moderate to high heritabilities coupled with moderate to high expected genetic advance were observed for all studied traits. Number of seeds per pod, number of pods per plant, number of pods per cluster, number of clusters per plant, days to 50% flowering and days to maturity had positive and significant correlations with seed yield per plant. The accession IC 39289-P<sub>4</sub> had been identified to be of short duration of 50 days. The accessions PLG 62, EC 520035, IC 305291, IC 39383, IC 39333, IC 39403 during <italic>summer</italic> season and EC 511379, PLM-14, IC 324021, EC 511371, IC 370497 during <italic>kharif</italic> seasonexhibited superiority in terms of seed yield over best check.

scholarly journals Peanut Yield Potential as Influenced by Cropping System and Plant Density

1996 ◽  
Vol 23 (2) ◽  
pp. 129-133
Author(s):  
P. E. Igbokwe ◽  
N. V. K. Nkongolo
Keyword(s):  
Seed Weight ◽  
Plant Density ◽  
Cropping System ◽  
Dry Weight ◽  
Yield Potential ◽  
Plant Spacing ◽  
Seed Number ◽  
Vetiveria Zizanioides ◽  
Shoot Dry Weight ◽  
Pod Number

Abstract This study was conducted on a Memphis silt loam at Alcorn State University in 1992 and 1993 and investigated row-intercropping as a low-input alternative to the conventional cropping system for peanut (Arachis hypogaea L.) production in southwestern Mississippi. Extractable P and exchangeable cations were significantly (P ≤ 0.05) higher for vetiver-peanut row-intercropping in 1992. Extractable S and P were significantly (P ≤ 0.05) higher for vetiver-peanut row-intercropping and conventional peanut monocropping, respectively, in 1993. Plant height, shoot dry weight, the number of yellow nutsedge (Cyperus esculentus L.) per row, insect lesions per leaflet, and rodent diggings per row were significantly (P ≤ 0.05) higher for conventional peanut monocropping than when peanut was intercropped with vetiver grass [Vetiveria zizanioides (L.) Nash]. Peanut pod number, pod weight, seed number, and seed weight also were higher for conventional peanut monocropping. The seed mineral composition generally was not affected by cropping system and plant spacing. Peanut yield was higher for 15.2 cm within-row plant spacing compared to 10.2- and 20.3-cm spacings investigated in this study. Interaction between cropping system and plant spacing was significant for pod number, pod weight, seed number, seed weight, and seed Ca and Fe compositions in 1992, but only significant for seed number, seed weight, and seed Fe and Zn compositions in 1993.

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