Search Results

You are looking at 1 - 10 of 980 items for :

  • Refine by Access: All x
Clear All
Free access

Sergio Melgar and Michael J. Havey

one nuclear male-fertility-restoration locus ( Ms ) ( Jones and Clarke, 1943 ). Male-fertile plants possess normal (N) male-fertile cytoplasm or male-sterile (S) cytoplasm with a dominant allele at Ms . Male-sterile plants (S msms ) can be seed

Free access

Shawn A. Mehlenbacher

Incompatibility in hazelnut (Corylus avellana L.) is of the sporophytic type and is under the control of a single S-locus with multiple alleles. Tests in recent years have identified four new alleles, bringing the total to 26. Improved pollen testers have been identified for several alleles. The S-alleles of more than 90 cultivars have been identified by fluorescence microscopy and will be presented. These cultivars (and their alleles) include Tonda di Giffoni (2 23), San Giovanni (2 8), Gasaway (3 26), Gunslebert (5 23), Kadetten (20 25), Lang Tidlig Zeller (4 20), Nocciolino Sangrato (7 17), Rode Zeller (6 11), Segorbe (9 23), and Simon (6 22).

Free access

Shawn A. Mehlenbacher

one production zone to another, contrasts sharply with the situation with the major food crops. Pollen–stigma incompatibility in hazelnut is of the sporophytic type and controlled by a single locus, designated the S-locus, with multiple alleles

Full access

Rayane Barcelos Bisi, Rafael Pio, Daniela da Hora Farias, Guilherme Locatelli, Caio Morais de Alcântara Barbosa, and Welison Andrade Pereira

increased. In this sense, breeding programs for cultivars adapted to regions with high temperatures must be intensified. This study aimed to characterize S-alleles in hybrid pear cultivars ( P. communis × P. pyrifolia ) adapted to subtropical climates and

Open access

Hsiang-I Lee and Michael J. Havey

) cytoplasm with the homozygous recessive genotype at one nuclear male fertility restoration locus ( Ms ) ( Jones and Clarke, 1943 ). Breeders work to eliminate the dominant allele at Ms from populations to ensure stable expression of male sterility and

Free access

Njung’e Vincent Michael, Pamela Moon, Yuqing Fu, and Geoffrey Meru

genetic basis of crown rot resistance in these accessions that would inform breeders of best strategies for accumulating diverse disease resistance alleles through gene pyramiding is currently lacking. In addition, information on the genetic diversity

Free access

Shogo Matsumoto, Kentaro Kitahara, Sadao Komori, and Junichi Soejima

S-allele genotypes of nine apple (Malus ×domestica Borkh.) cultivars were identified using S-allele–specific polymerase chain reaction (PCR)–restriction fragmentlength polymorphism (RFLP) analysis. A new S-allele, Sg, was proposed to be present in `American Summer Pearmain', `Indo', `Kitanosachi', and `Meku 10'. This allele is very similar to Sf at the nucleotide sequence (92%) and deduced amino acid sequence (94%) levels.

Free access

Ossama Kodad, Rafel Socias i Company, Ana Sánchez, and M. Margarida Oliveira

gametophytic type ( Socias i Company et al., 1976 ) and is controlled by a single S locus with multiple alleles ( Crane and Lawrence, 1929 ). To ensure that flowers may be efficiently pollinated to reach an economically acceptable fruit set ( Kester and

Free access

Keiko Sekido, Yusaku Hayashi, Kunio Yamada, Katsuhiro Shiratake, Shogo Matsumoto, Tsutomu Maejima, and Hiromitsu Komatsu

in apple ( Broothaerts et al., 1995 ; Cheng et al., 2006 ) and from the nucleotide sequences of the S -RNases, the polymerase chain reaction (PCR)-based S -RNase allele genotype analysis method was developed ( Broothaerts, 2003 ; Kitahara and

Free access

Marina Petreikov, Lena Yeselson, Shmuel Shen, Ilan Levin, Arthur A. Schaffer, Ari Efrati, and Moshe Bar

the partitioning of soluble sugars and determines whether sucrose or hexose is accumulated ( Chetelat et al., 1995 ; Hadas et al., 1995 ; Miron and Schaffer, 1991 ; Miron et al., 2002 ). The wild species allele of the locus leads to a reduction in