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Cytology and morphology of the amphiploidHordeum chilense(4x) ×Aegilops squarrosa(4x)

✍ Scribed by A. Cabrera; A. Martín


Book ID
104671448
Publisher
Springer
Year
1991
Tongue
English
Weight
594 KB
Volume
81
Category
Article
ISSN
0040-5752

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✦ Synopsis


The intergeneric amphiploid Hordeum chilense × Aegilops squarrosa has been synthesized. The amphiploid plants have the expected chromosome number of 28. The average meiotic chromosome pairing was 12.48 bivalents + 3.04 univalents. The morphology of the amphiploid resembles that of the Aegilops parent. Nucleoli from both H. chilense and A. squarrosa are expressed in the amphiploid. Neither chromosome instability nor homoeologous pairing was found. The amphiploid is fertile and vigorous.


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The Congruencex1x2≡x3x4(modp), the Equat
✍ Anwar Ayyad; Todd Cochrane; Zhiyong Zheng 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 748 KB

We obtain the asymptotic formulae |B & V| =( |B|Âp)+O(-|B| log 2 p) for the number of solutions of the congruence x 1 x 2 #x 3 x 4 (mod p) in a box B of arbitrary size and position, and N(B)=(12Â? 2 ) B 2 log B+CB 2 +O(B 19Â13 log 7Â13 B), with C given explicitly, for the number of solutions of the