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caracterizarea vigorii unor hibrizi de porumb prin metoda coldtest 6°c

caracterizarea vigorii unor hibrizi de porumb prin metoda coldtest 6°c

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46<br />

Olga Stan şi colaboratorii<br />

Germinaţie, % %<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

Neptun<br />

95 100 96 99 97 100 97 99 98<br />

91 93<br />

F322<br />

Genotip<br />

Faur<br />

F4730<br />

Octavian<br />

F365<br />

STAS<br />

Coldtest 6°C<br />

STAS Coldtes<br />

DL 5% = 4,28 8,73<br />

1% = 5,81 11,87<br />

0,1% = 7,88 16,09<br />

Fig. 1 – Potenţialul <strong>de</strong> germinaţie al <strong>unor</strong> <strong>hibrizi</strong> <strong>de</strong> <strong>porumb</strong> <strong>de</strong>terminat <strong>prin</strong> meto<strong>de</strong>le<br />

STAS 25°C şi Coldtest 6°C<br />

(Germination potential of some maize hybrids <strong>de</strong>termined by standard and Coldtest 6°C methods)<br />

Greutate Greutate germeni, germeni, g<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

o<br />

***<br />

oo<br />

o **<br />

o<br />

ooo<br />

Neptun<br />

F475M<br />

F322<br />

Paltin<br />

Faur<br />

Genotip<br />

Rapsodia<br />

F4730<br />

F962<br />

Octavian<br />

o<br />

Cocor<br />

F365<br />

**<br />

Coldtest 6°C<br />

STAS<br />

STAS Coldtest<br />

DL 5% = 1,36 2,94<br />

1% = 1,86 4,00<br />

01%= 252 543<br />

Fig. 2 – Greutatea germenilor <strong>de</strong> <strong>porumb</strong>, <strong>de</strong>terminată <strong>prin</strong> meto<strong>de</strong>le STAS 25°C şi Coldtest 6°C<br />

(Maize germ weight <strong>de</strong>termined by standard and Coldtest 6°C methods)<br />

Lungimea coleoptilului<br />

Rezultatele pozitive obţinute privind lungimea coleoptilului, <strong>de</strong>terminată<br />

<strong>prin</strong> <strong>metoda</strong> STAS (25°C), au scos în evi<strong>de</strong>nţă <strong>hibrizi</strong>i Fundulea 475M, Rapsodia<br />

şi Fundulea 365 (figura 3), iar cele obţinute <strong>prin</strong> <strong>metoda</strong> Coldtest 6°C au fost

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