Evaluation of SRAP marker efficiency in identifying the relationship between genetic diversities of corn inbred lines with seed quantity and quality in derived hybrids

Mechanical drying has frequently caused injury in corn seed. Changes in seed moisture, temperature, and quality were determined for inbred lines A632, B73 and Mo17 to define the relationship between these variables. Ears harvested at ca. 48 and 38% seed moisture could be dried at 50 °C for 4–15 h and 18–24 h, respectively, before germination started to decline linearly with prolonged 50 °C drying. Drying time at 50 °C, seed moisture, or embryo moisture after 50 °C drying could be used equally well for prediction of seed quality. Seedling dry weights often declined even when seed was dried for only a few hours at 50 °C. Temperature measurements within seeds indicated that evaporation cooled the seed no more than 5 °C. Drying susceptibility of seed parents varied greatly between years.Key words: Moisture, temperature changes, seed corn, drying

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A Dominant Inhibitor Gene Inhibits the Expression of Ht2 against Exserohilum turcicum Race 2 in Corn Inbred Lines Related to B14

Plant Breeding ◽

10.1111/j.1439-0523.1989.tb00312.x ◽

1989 ◽

Vol 102 (1) ◽

pp. 35-44 ◽

Cited By ~ 5

Author(s):

H. Ceballos ◽

V. E. Gracen

Keyword(s):

Inbred Lines ◽

Exserohilum Turcicum ◽

Race 2 ◽

Corn Inbred ◽

Inhibitor Gene

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Analysis of the genetic diversity of super sweet corn inbred lines using SSR and SSAP markers

Genetics and Molecular Research ◽

10.4238/gmr.15017392 ◽

2016 ◽

Vol 15 (1) ◽

Cited By ~ 1

Author(s):

W.R. Ko ◽

K.J. Sa ◽

N.S. Roy ◽

H.-J. Choi ◽

J.K. Lee

Keyword(s):

Genetic Diversity ◽

Sweet Corn ◽

Inbred Lines ◽

Corn Inbred

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Chlorsulfuron Tolerance and Acetolactate Synthase Activity in Corn (Zea maysL.) Inbred Lines

Weed Science ◽

10.1017/s0043174500088366 ◽

1991 ◽

Vol 39 (4) ◽

pp. 553-557 ◽

Cited By ~ 18

Author(s):

Giuseppe Forlani ◽

Erik Nielsen ◽

Pierangelo Landi ◽

Roberto Tuberosa

Keyword(s):

Callus Tissue ◽

Specific Activity ◽

Acetolactate Synthase ◽

Inbred Lines ◽

Root Tips ◽

Stages Of Growth ◽

Naturally Occurring ◽

Tolerant Line ◽

Corn Inbred

Seven corn inbred lines previously shown to differ in response to soil residues of chlorsulfuron were characterized as to the target-enzyme acetolactate synthase (ALS) specific activity and to its susceptibility to the herbicide. ALS from plantlets at the five-leaf stage of growth was similarly susceptible to chlorsulfuron in all lines and its specific activity in the shoots was not significantly correlated with in vivo tolerance to the herbicide. By contrast, differences in ALS specific activity in roots of plants both at the five- and three-leaf stages of growth were significantly correlated (r = 0.96∗∗and r = 0.93∗∗, respectively) with in vivo tolerance. Correlation was also noted in extracts from cultured excised root tips (r = 0.94∗∗). Callus tissue of a chlorsulfuron-tolerant line was less affected by the herbicide and had a significantly higher ALS specific activity than callus from a chlorsulfuron susceptible line, whereas inhibition of ALS by the herbicide was similar in both lines. These results indicate that the naturally occurring differences in ALS levels in the roots of the investigated inbred lines contribute largely to the differential in vivo response observed to chlorsulfuron.

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