Overexpression of SlERF3b and SlERF5 in transgenic tomato alters fruit size, number of seeds; promotes early flowering, tolerance to abiotic stress and resistance to B. cinerea infection

A field experiment was conducted during 2003-2004 and 2004-2005 to study the effect of foliar sprays of ethrel or ethephon (2- chloroethyl phosphonic acid) on pollen sterility and yield parameters in Capsicum annuum var. Pusa jwala. Effect of treatments was also studied in F1 hybrids raised from treated male sterile plants crossed with the control plants. Plants sprayed with 0.1, 0.2 and 0.3% (v/v) ethrel exhibited 93.1-100% pollen sterility. This was associated with significant reduction in yield parameters (number of flowers, fruits/plant, fruit size, number of seeds/fruit and total yield/plant). However, the plants sprayed only once with 0.1% ethrel at pre-meiotic stage showed 93.1% pollen sterility without any significant reduction in yield parameter. The F1 hybrids obtained by crossing the 100% male sterile treated plants with the pollen of untreated (control) plants exhibited only insignificant reduction in the number of flowers/ plant, fruits/plant, fruit size, number of seeds/fruit and total yield/plant. However, these parameters in F1 hybrids were significantly higher over the treated plants.

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Morfologi Dan Mutu Fisik Benih Kenanga (Cananga odorata (Lam.) Hook.f. & Thomson forma genuina)

Journal of Tropical Silviculture ◽

10.29244/j-siltrop.10.2.95-99 ◽

2019 ◽

Vol 10 (2) ◽

pp. 95-99

Author(s):

Arum Sekar Wulandari ◽

Ferawati Oktia Nurhayani

Keyword(s):

Moisture Content ◽

Economic Value ◽

Fruit Size ◽

Morphological Observation ◽

Seed Moisture Content ◽

Physical Quality ◽

Seed Moisture ◽

Size Number ◽

High Quality Seed ◽

Number Of Seeds

Cananga is one of the forestry plant that has high economic value and benefits. The provision of high-quality seed is necessary for establishy cananga plantation. The aim of this study was to observe the fruit morphology and analyze the physical quality of cananga seeds. This research method consisted of (1) morphological observation of seed (fruit size, number of seeds per fruit, and their correlation); (2) physical quality testing of seed (the weight of 1 000 seeds and seed moisture content). The observations showed that the fruit length were 7.40-27.5 mm, width 0.43-16.63 mm and weight 0.36-2.88 grams. The size of fruit have significant effect on the number of seeds in the fruit, there are 1-12 seeds in one cananga fruit. There are approximately 16 000 seeds in 1 kg of cananga seed. Seed moisture content of fruit that taken from tree (51.20-59.20%) is higher than seed water content of fruits that fall due to ripe physiologically (34.57-37.82%). Key words: cananga, morphological, physical quality, seed

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Studies on Characters of Chironja Seedling Trees

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v64i2.10237 ◽

1969 ◽

Vol 64 (2) ◽

Author(s):

A. Pérez-López ◽

A. Sotomayor-Ríos ◽

S. Torres-Rivera

Keyword(s):

Citric Acid ◽

Quality Index ◽

Fruit Size ◽

Soluble Solids ◽

Fruit Peel ◽

Acid Ph ◽

Size Number ◽

Acid Ratio ◽

Tree Fruit ◽

Number Of Seeds

A search for good chironja clones was performed on several chironja seedlings grown on a Typic Tropohumults soil at the Corozal Agricultural Substation . This research demonstrated that chironja seedlings can be selected for yield per tree, fruit size, number of seeds per fruit, peel weight, citric acid, pH, soluble solids to acid ratio, and quality index. However, the high coefficient of variability for number of seeds, cumulative weight and number of fruits per tree during eight bearings and the quality index indicates that the probability of selecting for these characters is higher than that for fruit size, citric acid, pH, and soluble solids/acid ratio. The study also showed a great variability of the seedlings, following the frequency distribution typical of populations, indicating that in order to maintain uniform populations the chironja must be propagated through vegetative plant tissues, like grafting, instead of by seeds.

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Interaction between biological and chemistry fungicides and tomato pollinators

Revista Colombiana de Ciencias Hortícolas ◽

10.17584/rcch.2018v12i2.7690 ◽

2018 ◽

Vol 12 (2) ◽

pp. 425-435

Author(s):

Carlos De Melo e Silva-Neto ◽

Anna Clara Chaves Ribeiro ◽

Flaviana Lima Gomes ◽

Jordana Guimarães Neves ◽

Aniela Pilar Campos de Melo ◽

...

Keyword(s):

Bacillus Subtilis ◽

Mortality Rate ◽

Fruit Size ◽

Pollen Grains ◽

Fruit Production ◽

Control Treatment ◽

Copper Hydroxide ◽

Tomato Crop ◽

Bite Marks ◽

Number Of Seeds

The use of agrochemicals is harmful to bees visiting agricultural crops, reducing production gains from pollination, but the effect of fungicides on these bees is not known. The objective of this study was to verify the effect of bee visitation influenced by different fungicides on the tomato crop and on the deposition of pollen grains on the stigma, number of seeds, mass and fruit size. The experiment was conducted with 10 treatments: (T1) control treatment, without application of agrochemicals; (T2 and T3) Bacillus subtilis in different application frequencies; (T4) copper hydroxide; (T5) B. subtilis and copper hydroxide; (T6) acibenzolar-S-methyl; (T7) (trifloxystrobin+tebuconazole) and B. subtilis; (T8) copper hydroxide+Mancozeb; (T9) propineb+(trifloxystrobin+ tebuconazole); (T10) (trifloxystrobin+tebuconazole)+B. subtilis+copper hydroxide. The presence of the pollination mark on the flower, the pollen load of the stigmas, the number of seeds per fruit, and the size and mass of the fruits were determined in each treatment. Subsequently, the mortality rate of Melipona quadrifasciata (Hymenoptera, Apidae) exposed to four fungicides (trifloxystrobin+tebuconazole; manganese and zinc; copper hydroxide; Bacillus subtilis) was estimated. The mortality rate of M. quadrifasciata over 24 h of evaluation was higher in the treatments with copper hydroxide and trifloxystrobin+tebuconazole (75 and 50%, respectively). The mortality rate was lower in the treatments with manganese and zinc and Bacillus subtilis and in the control treatment. The treatments with trifloxystrobin+tebuconazole reduced the presence of bite marks on the flowers and of pollen grains on the flower stigma. The fruits of the control treatments and treatments with B. subtilis and copper hydroxide were larger and had greater mass, as compared to other agrochemicals. Thus, a higher number of pesticide applications on the tomatoes reduced bee visitation rates to the flowers and, consequently, reduced the amount of pollen grains deposited on the stigmas, also reducing the fruit production.

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Transgenic Tomato Overexpressing ath-miR399d Improves Growth under Abiotic Stress Conditions

Физиология растений ◽

10.7868/s0015330315030069 ◽

2015 ◽

Vol 62 (3) ◽

pp. 389-395

Author(s):

N. Gao ◽

X. M. Qiang ◽

B. N. Zhai ◽

J. Min ◽

W. M. Shi

Keyword(s):

Abiotic Stress ◽

Transgenic Tomato ◽

Stress Conditions

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Leafing intensity and the fruit size/number trade‐off in woody angiosperms

Journal of Ecology ◽

10.1111/1365-2745.12622 ◽

2016 ◽

Vol 104 (6) ◽

pp. 1759-1767 ◽

Cited By ~ 7

Author(s):

Sarah L. Dombroskie ◽

Amanda J. Tracey ◽

Lonnie W. Aarssen

Keyword(s):

Fruit Size ◽

Trade Off ◽

Size Number

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ESTIMATES OF POLLEN FERTILITY AND ISOZYME PROFILES OF STAMINATE KIWIFRUIT PLANTS IN SELECTED CALIFORNIA ORCHARDS

HortScience ◽

10.21273/hortsci.27.6.624c ◽

1992 ◽

Vol 27 (6) ◽

pp. 624c-624

Author(s):

M. L. Meyer ◽

F. A. Bliss

Keyword(s):

Pollen Fertility ◽

Genotypic Variation ◽

Fruit Size ◽

Actinidia Deliciosa ◽

Percentage Germination ◽

Dioecious Plant ◽

Positive Correlation ◽

Number Of Seeds

Kiwifruit (Actinidia deliciosa) is a functionally dioecious plant where fruit size is dependent on number of seeds set. Pollen fertility was estimated in 1990 and 1991 by percentage stainability and percentage germinability in vitro. Profiles of the isozymes AAT, GPI and PGM were used to assess if any large differences in pollen fertility could be attributed to genotypic variation. Based on these three isozymes, eight different genotypes were discovered. Although significant differences were found among vines within orchards and among orchards, all vines can be considered good pollenizers (stainability > 87%). A positive correlation was found in 1991 between percentage stainability and percentage germination.

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Thinning and Diametric Fruit Growth Response of Apple Trees Treated with Benzyladenine and GA4+7 (Accel®), Carbaryl, and NAA

HortScience ◽

10.21273/hortsci.30.4.787e ◽

1995 ◽

Vol 30 (4) ◽

pp. 787E-787

Author(s):

John A. Cline ◽

Mary Bom ◽

Donald C. Elfving

Keyword(s):

Growth Response ◽

Additional Data ◽

Fruit Size ◽

Fruit Growth ◽

Sharp Decline ◽

Fruit Thinning ◽

Growing Seasons ◽

Fruit Maturity ◽

Cluster Rate ◽

Number Of Seeds

A series of seven fruit thinning experiments with benzyladenine (BA), benzyladenine and GA4+7 (10:1 BA:GA4+7, Accel), carbaryl (CB), and NAA were conducted at the Horticultural Experiment Station, Simcoe, during the 1993 and 1994 growing seasons. In 1993, BA and Accel at 0, 100, 200, and 300 mg of BA/liter were applied to mature `Redspur Delicious'/M.26 and `Empire'/M.26 trees when fruit were ≈10 mm in diameter. In one set of experiments in 1994, Accel was applied at 0, 25, 50, 100, 150, and 200 mg of BA/liter to mature `McIntosh'/M.26 and `Empire'/M.7 trees. In a second set of experiments in 1994, Accel was applied at 0, 50, and 100 mg of BA/liter to mature `Idared'/M.26, `Empire'/M.26, and `Marshall McIntosh'/Mark trees when fruit were ≈10 mm in diameter. Additional treatments included bloom sprays of Accel at 50 mg of BA/liter, and sprays of BA at 50 mg a.i/liter, NAA at 10 mg a.i./liter, CB at 1000 mg a.i./liter, and a “low” (two fruit remaining/flower cluster) and `”high” (one fruit remaining/flower cluster) rate of hand thinning. In all experiments, thinning response to BA and Accel increased with concentration. Concentrations below 50, 100, and 300 mg BA/liter were generally ineffective for thinning `Empire', `Idared', and `McIntosh', and `Delicious', respectively. Fruit size of `Idared' and `Empire' was increased at rates of 50 mg BA/liter, whereas rates of 100 mg BA/liter were needed to increase fruit size of `McIntosh'. Accel applied to `Empire' at 150 mg BA/liter decreased the number of seeds per fruit and increased fruit length:diameter (L:D) ratios. Concentrations of Accel exceeding 100 mg BA/liter in `Red Delicious' decreased the number of seeds per fruit, while having little effect on fruit L:D ratios even though lower concentrations increased fruit L:D ratios. Diametric fruit growth measurements in 1994 indicated a temporary, but sharp, decline in growth rate immediately following treatment imposition for trees that responded positively to thinning. Additional data describing treatment effects on fruit size distribution, vegetative growth, and fruit maturity will be presented and discussed in relation to crop load.

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