Use of ethephon in wheat breeding

Hughes, W. G.

doi:10.1111/j.1744-7348.1975.tb00520.x

Cited by 6 publications

(10 citation statements)

References 3 publications

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“…Specific timing of early Ethrel application was emphasized by ROWLL & MILLER (1971 and STOSKOPF & LAW (1972). Although the poor spike emergence of Ethrel-treated plantscan be overcome by GA, application (HUGHES, 1975), the added cost of GA, would not be economically feasible. In this study, RH-532 applied to Yecora 70 showed a linear increase in fertility from late to early tillers, which reflected the wide variation of responses from late to early tillers and the necessity of earlier application (probably at premeiosis stage) of RH-532.…”

Section: Methodsmentioning

confidence: 99%

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Response of wheat tillers at different growing stages to gametocide treatment

Jan

Rowell

1981

Euphytica

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The effects of the gametocides Ethrel, RH-532, and RH-2956 on wheat tillers at various stages of development were studied. The gametocides were applied to Anza and Yecora 70, two spring wheat (Triticum uestivum L.) varieties, at three rates of foliar application when the main tillers were at meiosis. Ethrel was less effective in causing sterility than RH-532 and RH-2956. Anza showed greater induced sterility than Yecora 70 when treated with these gametocides. Ethrel affected only late tillers treated at or before meiosis. RH-532 and RH-2956 at the high application rate were equally effective for Anza. RH-2956 at the high application rate induced uniform and maximum sterility in early and late tillers of both Anza and Yecora 70.

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Section: Methodsmentioning

confidence: 99%

“…Most of the recent studies of gametocide effects on wheat were conducted to evaluate the general effects of gametocides on male and female fertility and the outcrossing ability, and to ascertain the optimum time and rare of applications (HUGHES, 1975 ;JAN et al, 1974JAN et al, ,1976ROWELL & MILLER, 1971STOSKOPF & LAW. 1972).…”

Section: Introductionmentioning

confidence: 99%

Response of wheat tillers at different growing stages to gametocide treatment

Jan

Rowell

1981

Euphytica

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“…Ethrel, an ethylene-releasing compound, causes male sterility in wheat (Triticum aestivum L .) (Borghi et al ., 1973 ;Hughes, 1979 ;Hughes et al ., 1974 ;Rowell & Miller, 1974Fairney & Stoskopf, 1975) . In each of these reports, gametocide activity increased with increasing dose of the compound, and effectiveness varied significantly with the timing of application .…”

Section: Introductionmentioning

confidence: 99%

“…In each of these reports, gametocide activity increased with increasing dose of the compound, and effectiveness varied significantly with the timing of application . Selectivity of male gametocide activity has been demonstrated in various studies (Hughes, 1979 ;Hughes et al ., 1974 ;Rowell & Miller, 1974) . Ethrel-induced, male-sterile 'Nugaines' wheat remained female fertile as shown by seed set in hand crosses with viable pollen, and this level of female fertility was comparable to that present in cytoplasmic male-sterile Nugaines (Rowell & Miller, 1974) .…”

Section: Introductionmentioning

confidence: 99%

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Mutations blocking sensitivity to gibberellic acid promote ethylene-induced male sterility in wheat

Keyes

Sorrells

1990

Euphytica

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Ethylene is known to perturb normal reproductive development in wheat, particularly the development of functional pollen . Two experiments were carried out to test the hypothesis that increasing insensitivity to gibberellic acid (GA), conferred by the Rht genes, would be associated with increased male sterility in ethrel or Cerone®-treated wheat . Wild type (WT = rhtl/rhtl, rht2/rht2), single dwarf (SD = Rhtl/Rhtl, rht2/rht2 or SD = rhtl/rhtl, Rht2/Rht2), and double dwarf (DD = Rhtl/Rhtl, Rht2/Rht2) near-isogenic lines in six genetic backgrounds were treated with ethrel or Cerone ® at the late tetrad to early uninucleate stage of pollen grain development . Ethrel induced pollen abortion in all genotypes but was highest for DD (41% above background) followed by SD (20%), and then WT genotypes (10%) . Spikelet fertility decreased as the number of Rht alleles increased in response to ethrel or Cerone ® treatments. Expressed as a percent of controls, spikelet fertility was 56% for WT, 42% for SD, and 29% for DD . The consistent linear relationship between the number of Rht alleles and sensitivity of ethylene-induced male sterility suggests that GA and its recognition may exert a stabilizing effect in pollen development in the presence of stress or an ethylene shock .

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Production of F₁ hybrids using ethrel-induced male sterility in Indian mustard (Brassica juncea (L.) Coss.)

Banga

Labana

1983

J. Agric. Sci.

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SUMMARYThe effect of field layout and the orientation of seed-production blocks on outcrossing rates was investigated in Indian mustard. The study incorporated three male:female combinations, i.e. 1:2, 1:3 and 2:4 laid in east–west, north–south and circular directions. The experimental material consisted of four test cultivars (RLM 198, RLM 514, Varuna and TM 4) in a split-plot design. Male sterility was achieved by spraying 0·25% (v/v) ethrel twice before the emergence of the first flowering shoots. The proportion of hybrid seed set was maximal in the 2:4 combination in a circular design. Outcrossing varied from 19 to 79%. Heterosis was evident in yield trials, but F1 hybrids showed carry-over effects due to ethrel treatment. It is argued that ethrelinduced male sterility has only a limited role in screening parental combinations for their yield assessment.

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Use of ethephon in wheat breeding

Cited by 6 publications

References 3 publications

Response of wheat tillers at different growing stages to gametocide treatment

Response of wheat tillers at different growing stages to gametocide treatment

Mutations blocking sensitivity to gibberellic acid promote ethylene-induced male sterility in wheat

Production of F₁ hybrids using ethrel-induced male sterility in Indian mustard (Brassica juncea (L.) Coss.)

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Use of ethephon in wheat breeding

Cited by 6 publications

References 3 publications

Response of wheat tillers at different growing stages to gametocide treatment

Response of wheat tillers at different growing stages to gametocide treatment

Mutations blocking sensitivity to gibberellic acid promote ethylene-induced male sterility in wheat

Production of F1 hybrids using ethrel-induced male sterility in Indian mustard (Brassica juncea (L.) Coss.)

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Production of F₁ hybrids using ethrel-induced male sterility in Indian mustard (Brassica juncea (L.) Coss.)