scholarly journals Effect of temperature and duration of maize pollen storage on the seed set rate

2017 ◽  
Vol 23 (2) ◽  
pp. 15-22
Author(s):  
Vojka Babic ◽  
Natalija Kravic ◽  
Jelena Srdic
Keyword(s):  
Seed Set ◽  
Effect Of Temperature ◽  
Pollen Storage ◽  
Maize Pollen ◽  
Seed Set Rate

The effect of temperature on seed set and embryo development in reciprocal crosses of wheat and barley

Euphytica ◽  
1994 ◽  
Vol 78 (1-2) ◽  
pp. 53-58 ◽  
Author(s):  
Márta Molnár-Láng ◽  
József Sutka
Keyword(s):  
Embryo Development ◽  
Seed Set ◽  
Effect Of Temperature ◽  
Reciprocal Crosses

scholarly journals OsMND1 regulates early meiosis and improves the seed set rate in polyploid rice

2019 ◽  
Vol 87 (2) ◽  
pp. 341-356 ◽  
Author(s):  
Yuguo Xiong ◽  
Lu Gan ◽  
Yaping Hu ◽  
Wenchao Sun ◽  
Xue Zhou ◽  
...  
Keyword(s):  
Seed Set ◽  
Seed Set Rate

The effect of temperature on fruit set, seed set and seed germination in ‘Sonia’ × ‘Hadley’ hybrid Tea-rose crosses

Euphytica ◽  
1987 ◽  
Vol 36 (1) ◽  
pp. 117-120 ◽  
Author(s):  
D. P. De Vries ◽  
Lidwien A. M. Dubois
Keyword(s):  
Seed Germination ◽  
Fruit Set ◽  
Seed Set ◽  
Effect Of Temperature

The effect of temperature on the hardseed content of some annual legumes grown on the northern slopes of New South Wales

1990 ◽  
Vol 41 (5) ◽  
pp. 941 ◽  
Author(s):  
GM Lodge ◽  
RD Murison ◽  
EW Heap
Keyword(s):  
Seed Set ◽  
New South ◽  
Trifolium Subterraneum ◽  
Summer Rainfall ◽  
Effect Of Temperature ◽  
South Wales ◽  
Low Levels ◽  
Fluctuating Temperatures ◽  
Over Time ◽  
Better Than

Two laboratory experiments were conducted to assess the effects of constant and fluctuating temperatures on the hardseed content of a range of legume species. In the first experiment the effects of constant (10/10,25/25,40/40�C) and fluctuating temperatures (40/10,40/25�C) on the rate of breakdown of the hardseed of 15 legumes was examined over a 12-month period. The second experiment investigated the hardseed level of seven of these legumes stored at temperatures of 25/25,40/25,60/25�C over 11 months. A method of analysing these data is presented which describes the hardseed profile over time and allows the rates of change to be compared. For seed collected in a summer rainfall environment fluctuating temperatures of 40/10�C significantly reduced the hardseed level of Medicago aculeata Willd. and M. scutellata (L.) Mill, cv. Sava, Trifolium subterraneum ssp. subterraneum Katzn. et Morley cv. Woogenellup and T. subterraneum ssp brachycalycinum Katzn. Et Morley cv. Clare. A 40/25�C regime reduced the hardseededness of M. minima (L.) Bart, M, aculeata, M. truncatula Gaertn. cv. Sephi, T. subterraneum ssp, subterraneum Katzn. et Morley cvv. Nungarin and Woogenellup and cv. Clare. At 60/25�C the hardseed level of all legumes declined over time. Further at 60/25�C hardseed contents declined at a significantly faster rate than for those at 40/25�C. Field observations of the number of seedlings emerging in the summer after seed set followed a similar pattern to that expected from the laboratory studies. From these studies it is proposed that, provided their seed set is adequate, cultivars with comparatively low levels of hardseed may perform better than expected when grown in a summer rainfall environment, particularly when they are either grown in association with native grasses or have a high proportion of buried burrs. Under these conditions temperatures of around 40/25�C could be expected.

Using a polyploid meiosis stability (PMeS) line as a parent improves embryo development and the seed set rate of a tetraploid rice hybrid

2011 ◽  
Vol 91 (2) ◽  
pp. 325-335 ◽  
Author(s):  
Y.-C. He ◽  
J. Ge ◽  
Q. Wei ◽  
A.-M. Jiang ◽  
L. Gan ◽  
...  
Keyword(s):  
Embryo Development ◽  
Seed Set ◽  
Endosperm Development ◽  
Development Pattern ◽  
Rice Breeding ◽  
High Pollen ◽  
Rice Hybrid ◽  
Normal Meiosis ◽  
Tetraploid Line ◽  
Seed Set Rate

He, Y.-C., Ge, J., Wei, Q., Jiang, A.-M., Gan, L., Song, Z.-J. and Cai, D.-T. 2011 Using a polyploid meiosis stability (PMeS) line as a parent improves embryo development and the seed set rate of a tetraploid rice hybrid. Can. J. Plant Sci. 91: 325–335. Polyploidy is widely accepted to play an important role in the evolution and breeding of plant species. However, a low seed set rate significantly hindered the development of polyploid rice breeding. Our results show that the seed set rate in polyploid meiosis stability (PMeS) line HN2026-4X was above 80%, but less than 40% in the other two tetraploid lines (4X indicates a tetraploid line and 2X indicates a diploid line). Furthermore, the seed set rate of Balilla-4X×HN2026-4X was also higher (67.18%) compared with that of Balilla-4X×NJ11-4X (37.26%), suggesting that the PMeS trait was transmitted to the next generation. The significantly higher seed set rate was attributed to the high pollen fertility and viability, as well as the normal meiosis of the HN2026-4X line as a male parent and also to successful embryogenesis. Investigations into embryo microstructure suggested that the embryo development pattern in Balilla-4X×HN2026-4X appeared normal at all stages, but many changes were discovered in Balilla-4X×NJ11-4X. The embryos were mainly defective at the four following stages: 1 d after pollination (DAP), 2–3 DAP, 4-5 DAP, and 10-15 DAP. The pattern of embryo developmental failure was similar in the two hybrids, but the abortive frequency in Balilla-4X×HN2026-4X was significantly lower than that of Balilla-4X×NJ11-4X at the respective stages. Additionally, aberrant fertilization, poor endosperm development, and abnormal embryo polarization also contributed to the low seed set in the hybrid of Balilla-4X×NJ11-4X. This study suggests that the PMeS line is a valuable resource, which could be used to develop tetraploid rice hybrids with superior yield.

scholarly journals Effect of Pollen Genotype, Temperature and Period of Storage on In Vitro Germinability and In Vivo Seed Set in Chrysanthemum—Preliminary Study

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2395
Author(s):  
Natalia Miler ◽  
Anita Wozny
Keyword(s):  
Seed Set ◽  
Pollen Viability ◽  
Chrysanthemum Morifolium ◽  
Pollen Storage ◽  
Cross Breeding ◽  
Pollen Donor ◽  
Pollen Germinability ◽  
Fresh Pollen

Among many challenges in chrysanthemum cross-breeding, the access to viable pollen for hybridization of cultivars distant in location and different in flowering time is required. Low pollen viability along with incompatibility are mainly responsible for low seed set in modern chrysanthemum cultivars. The aim of the study was to test various temperatures and periods of pollen storage of Chrysanthemum × morifolium in order to elaborate the method of chrysanthemum pollen preservation for cross-breeding purposes. In the first experiment, in vitro pollen germination of four cultivars was investigated following storage at 20 °C, 4 °C, −20 °C, and −80 °C, for one, four, and eight weeks. The second experiment focused on in vivo seed set after one week pollen treatment with 20 °C, 4 °C, −20 °C, and −80 °C (three pollen donor cultivars tested). Pollen in vitro germinability, as well as seed set efficiency, was generally low and cultivar dependent. Independent of the period of storage, stored pollen germinability was lower (5.30–6.63%) than fresh pollen (8.15%). Incubation of pollen in −80 °C significantly increased pollen germinability (9.80%), as well as seed set efficiency in comparison to control (19.28% and 10.21%, respectively) provided the cultivars are compatible. Among cultivars, the highest germinability of pollen was found in ‘Brda’ and ‘Donna’ (8.2% and 8.23%, respectively), while ‘Bydgoszczanka’ showed the lowest germinability (2.97%). There were also pollen genotype dependent effects in in vivo seed set efficiency, which was highest in ’Brda’ (17.57%) and much lower in ‘Jutrzenka’ and ‘Polka’ (1.34% and 0.39%, respectively), which contributed to the incompatibility of crossed cultivars rather than pollen viability.

The effect of temperature during growth and flowering on the seed set of tetraploid freesia

Euphytica ◽  
1973 ◽  
Vol 22 (1) ◽  
pp. 35-38 ◽  
Author(s):  
Y. O. Kho ◽  
J. Ba�r
Keyword(s):  
Seed Set ◽  
Effect Of Temperature

Effect of temperature on seed set and in vitro pollen germination in French beans (Phaseolus vulgaris)

1979 ◽  
Vol 19 (101) ◽  
pp. 725 ◽  
Author(s):  
PJ Farlow ◽  
DE Byth ◽  
NS Kruger
Keyword(s):  
Pollen Germination ◽  
Seed Set ◽  
Germination Percentage ◽  
French Bean ◽  
Hot Water ◽  
Effect Of Temperature ◽  
In Vitro Pollen Germination ◽  
French Beans ◽  
Different Temperatures

A technique for in vitro germination of French bean pollen was developed and the effect of temperature on gamete development, pollen germination and seed set investigated. Temperature had a profound effect on in vitro pollen germination percentage, pollen tube growth and bursting percentage. These were maximal at 7.2�C, 16.7�C and 38.3�C, respectively. In this study, pollen development was not affected at day/night temperatures of 16.1�/12.8�C, and ovule abortion was the cause of seed set failure at these temperatures. Hot water treatment (48�-44�C) of flowers caused failure of seed set due to pollen inviability. Consequently this technique may allow hybridization without emasculation in beans. Treatment of buds with hot water of different temperatures and in vitro pollen germination at high temperatures may have application as screening techniques for heat tolerance in French beans.

scholarly journals Oat Floral Biology and Factors Affecting Seed Set

2021 ◽  
Author(s):  
Harshavardan J. Hilli ◽  
Rahul Kapoor ◽  
Amandeep .
Keyword(s):  
Seed Set ◽  
Floral Biology ◽  
Effect Of Temperature ◽  
Eastern Region ◽  
Rabi Season ◽  
Floral Structure ◽  
Factors Affecting ◽  
Avena Nuda ◽  
Cultivated Species ◽  
North Western

In India, oat is grown as fodder crop during Rabi season in north-western and central parts of the country and is now even extending to eastern region as well. The only commercially cultivated species in the genus Avena are Avena sativa, Avena nuda and Avena byzantine. Oat flowers are bit delicate when compared to other cereal floral structure and seed set is influenced by many factors during artificial hybridisation. This paper includes about floral biology of oat crop and also the various factors responsible for seed set during hybridisation viz effect of Interval Between Emasculation and Pollination, effect of temperature for seed set and any Injury to floral Parts during hybridisation.

scholarly journals METHOD FOR DRYING MAIZE POLLEN

2020 ◽  
Vol 20 (2) ◽  
pp. 98-106
Author(s):  
Indri Fariroh ◽  
Riza Yuli Rusdiana
Keyword(s):  
Silica Gel ◽  
Pollen Viability ◽  
Block Design ◽  
Pollen Storage ◽  
Maize Pollen ◽  
Viability Testing ◽  
Randomized Block Design ◽  
Male Line ◽  
Pollen Water Content ◽  
Hybrid Maize

Pollen managements consisted of suitable harvest timing, pollen drying to a certain misture content, pollen viability testing, and pollen storage. Maize pollen was sensitive to desiccation. This experiment was aimed to determine preservation technique in reducing pollen water content while maintaining its viability. Maize variety which used in this research was BIMA 3 as male line hybrid maize. Pollen viability testing used potassium iodide (KI) 1%. This experiment used randomized block design with 3 factors and 2 replicates, i.e. boron (H3BO3) fertilizers (0 and 3 kg ha-1 ), drying techniques (MgCl2, silica gel, zeolite, preservation in air-cond room (18±1 °C; RH43%), and drying periods (0, 2, 4, 6, 8 hours). The observation response of this experiment were viability and pollen weight changing. The result showed that there is no interaction between three factors to observation response, while drying technique and drying period combinations showed interactions to observation response. Pollen maize drying used silica gel for 4 hours was able to decline much pollen weight and maintain pollen viability better than other techniques.

Sign in / Sign up

Export Citation Format

Share Document