scholarly journals Effect of Temperature on Flower Bud Initiation in Cereals : I. Inhibition of flower bud initiation in low temperature in rice plants (1).

1964 ◽  
Vol 33 (2) ◽  
pp. 111-114
Author(s):  
Jun INOUYE ◽  
Tsukuda KATAYAMA
Keyword(s):  
Low Temperature ◽  
Effect Of Temperature ◽  
Flower Bud ◽  
Rice Plants ◽  
Bud Initiation

scholarly journals Chilling Affects Flowering of Fall-bearing Red Raspberries

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 800A-800
Author(s):  
F. Takeda
Keyword(s):  
Low Temperature ◽  
Temperature Treatment ◽  
Flower Bud ◽  
Low Temperature Treatment ◽  
Temperature Exposure ◽  
Low Temperature Exposure ◽  
Chilling Hours ◽  
Bud Initiation ◽  
Shoot Emergence ◽  
Flower Bud Development

Tissue-cultured raspberry plants are not exposed to low temperatures during the propagation phase, yet the primocane that grows from the crown will flower terminally after developing 20 to 25 nodes. We studied the effect of duration of chilling (hours) (CH) on days to flower (DTF) in primocanes arising from root suckers of previously cropped fall-bearing `Heritage' and `'Summit' raspberries. Growth of `Heritage' plants with 0 or low CH was either short with rosetted leaves or indeterminate. Plants with 0 CH remained vegetative for >240 days, while plants with >750 CH flowered in <4 months when the primocane had 25 to 30 nodes. These results suggested that low-temperature exposure prior to shoot emergence was necessary for flower bud initiation in `Heritage' red raspberry. In contrast, all `Summit' flowered; DTF ranged from 120 days for 0 CH plants to <70 days for plants with 1000 CH. Low-temperature treatment affected flower bud development. Plants with 0 CH developed 15 flowering laterals, while plants with >750 CH had 25 flowering laterals. Although `Summit' needs no CH to flower, low temperature treatments definitely accelerated DTF and increased the number of fruiting laterals.

Blossom Thinning in Pome and Stone Fruit

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 553b-553
Author(s):  
Esmaeil Fallahi
Keyword(s):  
Fruit Size ◽  
Naphthalene Acetic Acid ◽  
Full Bloom ◽  
Flower Bud ◽  
Hydrogen Cyanamide ◽  
Ammonium Thiosulfate ◽  
The Past ◽  
Apple Cultivars ◽  
Ortho Cresol ◽  
Bud Initiation

Early thinning of apples is important because of its impact on fruit size and next season's flower bud initiation. In the past, apple cultivars were often sprayed with the blossom thinner sodium dinitro-ortho-cresol(Elgetol) during full bloom, followed by a post-bloom application of a fruit thinner such as carbaryl with or without naphthalene acetic acid (NAA). Elgetol was removed from the market in 1989 because of the high cost of re-registration. Full-bloom sprays of sulfcarbamide (Wilthin), pelargonic acid (Thinex), and endothalic acid (Endothal), ammonium thiosulfate (ATS) or petal fall spray of carbaryl (Sevin XLR Plus) were developed as replacements for Elgetol. Hydrogen cyanamide (HC) and other chemicals have been used to eliminate or to reduce chilling requirements of peaches grown under the warm desert conditions. HC applied at “pink bloom” stage was observed to reduce the number of open blooms in `Florda Prince' peach; therefore, it was first used for blossom thinning in this cultivar in Arizona. Later, HC was also found to be an effective blossom thinner for plums in Idaho. HC has recently been found to effectively thin apple and peach blossoms. Armothin has also been an effective blossom thinner for peach in California.

Floral induction in date palm seedlings (Phoenix dactylifera var. Deglet Nour) cultured in vitro

1987 ◽  
Vol 65 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Saïda Ammar ◽  
Abdellatif Benbadis ◽  
Bal Krishna Tripathi
Keyword(s):  
Date Palm ◽  
Root Formation ◽  
Early Stage ◽  
Floral Induction ◽  
Phoenix Dactylifera ◽  
Flower Bud ◽  
Precocious Flowering ◽  
Cultural Conditions ◽  
Bud Initiation

Flower bud initiation in 5-month-old seedlings of date palm (Phoenix dactylifera L. var. Deglet Nour) was studied under controlled conditions. Normally inflorescence formation in mature plants takes 8 to 10 years. In juvenile plants inflorescence formation was induced in a 16-h day at 28 °C, by a combination of 6-benzylaminopurine, indoleacetic acid, and glucose or sucrose. The present investigation has determined favourable cultural conditions for floral induction in date palm in vitro at a very early stage of ontogeny. Both male and female flowers were induced on young plants. Floral induction usually occurred only when root formation was completely inhibited. The apparent antagonism between root formation and floral development suggests a possible competition in the young plant for growth substances, although production of floral inhibitory substances from the root cannot be precluded. These observations on the induction of precocious flowering in date palm seedlings suggest a model of development, corresponding to neoteny, of this tree as an herb.

Wheat Catalase Expressed in Transgenic Rice Plants Can Improve Tolerance Against Low Temperature Injury

2002 ◽  
pp. 277-287
Author(s):  
Takeshi Matsumuraa ◽  
Noriko Tabayashib ◽  
Yasuyo Kamagata ◽  
Chihiro Souma ◽  
Haruo Saruyama
Keyword(s):  
Low Temperature ◽  
Transgenic Rice ◽  
Rice Plants ◽  
Transgenic Rice Plants
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