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Growth stages of mono-and dicotyledonous plants - Regione ...

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Bean Feller et al., 1995 b<br />

Phenological growth <strong>stages</strong> <strong>and</strong> BBCH-identification keys<br />

<strong>of</strong> Bean<br />

(Phaseolus vulgaris var. nanus L.),<br />

Code Description<br />

Principal growth stage 0: Germination<br />

00 Dry seed<br />

01 Beginning <strong>of</strong> seed imbibition<br />

03 Seed imbibition complete<br />

05 Radicle emerged from seed<br />

07 Hypocotyl with cotyledons breaking through seed coat<br />

08 Hypocotyl reaches the soil surface; hypocotyl arch visible<br />

09 Emergence: hypocotyl with cotyledons break through soil<br />

surface (“cracking stage”)<br />

Principal growth stage 1: Leaf development<br />

10 Cotyledons completely unfolded<br />

12 2 full leaves (first leaf pair unfolded)<br />

13 3rd true leaf (first trifoliate leaf) unfolded<br />

1 . Stages continuous till . . .<br />

19 9 or more leaves (2 full leaves, 7 or more trifoliate) unfolded<br />

Principal growth stage 2: Formation <strong>of</strong> side shoots<br />

21 First side shoot visible<br />

22 2nd side shoot visible<br />

23 3rd side shoot visible<br />

2 . Stages continuous till . . .<br />

29 9 or more side shoots visible<br />

Principal growth stage 5: Inflorescence emergence<br />

51 First flower buds visible<br />

55 First flower buds enlarged<br />

59 First petals visible, flowers still closed

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