Use of male-sterility for increasing the population tolerance of corn (Zea mays L)

Meyer, D. W.

doi:10.31274/rtd-180813-1721

Cited by 8 publications

(16 citation statements)

References 74 publications

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“…The difference between years was not due entirely to the different hybrids used, since the average barrenness for the seven barrenness by some tolerant genotypes as exemplified by A632 X A619 and 336 x 029. These results are in agreement with the work of Schwanke(1965) andMeyer (1970). B37, which was the most intolerant inbred, had much higher barrenness for the Tcms versions, demonstrating that the response to male sterility is dependent on genotype.Several researchers have found a high correlation between yield andbarrenness at high populations.…”

supporting

confidence: 91%

“…The time between anthesis and silking lengthens as population increases (Kiesselbach, 1950;Dungan et al, 1958;Thom, 1951b, Sass andLoeffel, 1959;Moss and Stinson, 1961;Woolley et al, 1962;Schwanke, 1965;Cardwell, 1967;Meyer, 1970) and intolerant hybrids have a longer delay than those more tolerant (Moss and Stinson, 1961;Schwanke, 1965;Earley et al, 1967;Meyer, 1970). Lonnquist and Jugenheimer (1943) and Sass and Loeffel (1959) (Barr, 1939;Loomis, 1935;Kiesselbach, 1948;Moss and Stinson, 1961;Moss, 1962).…”

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confidence: 99%

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Plant characteristics associated with barrenness in maize

Burén¹,

Anderson²

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Planting densities change with technology: higher fertility levels, good weed control, and improved hybrids which stand and yield well at high, planting rates have permitted use of considerably higher densities of corn (Zea mays L.) in recent years. Reports of high yields from populations of 50,000 or more plants per hectare are becoming common (Lang et al., 1956; Everett and Crowder, 1965; Pendleton, 1965; Rutger and Crowder, 1967a; Nunez and Kamprath, 1969). Lang et al. (1956) also noted that hybrids respond differentially to plant populations. Maximum corn grain yields are commonly obtained at leaf area indices (LAIs) of 3.5 to 4.5 (Eik and Hanway, 1966; Nunez and Kamprath, 1969). However, researchers have reported maximum dry matter accumulation for corn at much higher LAIs (Williams et al., 1965b; Rutger and Crowder, 1967a; Williams et al., 1968). Williams et al. (1965b) found crop growth rate usually approached asymptotic values at high LAIs, even when such indices approached 18 (plant density of 283,000 plants per acre or approximately 700,000 plants per hectare). The decline in corn grain yield accompanying LAIs above approximately 4.0 or 4.5 is due to a reduction in ear number and/or size. Nunez and Kamprath (1969) found a linear reduction in leaf area per plant as the plant population increased. They also reported a linear increase in LAI as plant population increased over the range of 34,500 to 69,000 plants per hectare, whereas a quadratic equation defined more pre cisely this relationship as the range became greater (34,500 to 102,500 plants per hectare). The optimum plant population or LAI for grain yield In general, literature concerning the effect of planting date on bar renness is quite limited, but numerous recent reports support the yield superiority of early dates. Data presented by Rossman (1965) and Rossman and Cook (1966) demonstrates the superiority of early May plantings in Michigan. May 1-9 plantings average 9% greater yields than May 12-20, 16% greater than May 22-31, and 27% higher than June 1-11 plantings. These general results are supported by the data of Dungan (1944), Stringfield and

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confidence: 91%

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confidence: 99%

Plant characteristics associated with barrenness in maize

Burén¹,

Anderson²

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“…They also observed that during the week prior to antheas 50% of the nitrogen accumulated by the plant was in the tasseL Other indirect lines of evidence sq>porting the competitive hypothesis are the results of experiments evaluating the effect of tassel size and male sterility on grain yield. Specially under adverse condidons, varieties that invest less dry matter in the formation of the staminate inflorescence (Mock and Schuetz, 1974) or that do not produce viable pollen (Meyer, 1970) tend to present hi^er grain yield.…”

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confidence: 99%

An ideotype of maize for conditions of high temperature and low moisture

Sangoi

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A PKD. degree represents the highest educational accomplishment in my career. I would like to dedicate it to may parents, Mario and Araci Sangoi, two humble, unpretentious,hardworJdng human beings, who never had the opportunity of finishing high school, but always did everyMng they could to provide the most valuable legacy, something that nobody could ever take awc^ fi'om their sons: the gift of education Ijust hope to be fi^rtimate enough to do the same for my daughters.

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“…Lonnquist and Jugenheimer (1943) and Sass and Loeffel (1959) suggested that the primary cause of barrenness is the lengthening of the anthesis-to-siIking period, i.e., by the time late silks emerge, the pollen is not viable. The interval between anthesis and silking lengthens as plant density is increased (Kiesselbach, 1950;Dungan et al 1958;Shav;and Thorn, 1951 ;Wool ley et al 1962;Cardwell, 1967;Meyer, 1970;Buren, 1970;Fakorede, 1977). Additionally, Kohnke and Miles (1951) reported that silking was delayed approximately one day for every increase of 7,000 -8,000 plants/ha.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Additionally, Kohnke and Miles (1951) reported that silking was delayed approximately one day for every increase of 7,000 -8,000 plants/ha. Maize hybrids intolerant of high plant densities have a longer delay in silk emergence than those that are tolerant (Moss and Stinson, 1961;Schwanke, 1965;Earley et al, 1967;Meyer, 1970;Buren, 1970;El-Lakany and Russell, 1971;Mock and Buren, 1972;Buren et al, (1974); Fakorede, 1977).…”

Section: Literature Reviewmentioning

confidence: 99%

Morphological and physiological traits associated with barrenness and grain yield in the maize breeding population, Iowa Upright Leaf Synthetic #1

Smith

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Use of male-sterility for increasing the population tolerance of corn (Zea mays L)

Cited by 8 publications

References 74 publications

Plant characteristics associated with barrenness in maize

Plant characteristics associated with barrenness in maize

An ideotype of maize for conditions of high temperature and low moisture

Morphological and physiological traits associated with barrenness and grain yield in the maize breeding population, Iowa Upright Leaf Synthetic #1

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