April 17, 2017

Schizostachyum brachycladum 'Bali Kuning' (TH) — BS-0191A

Chapter 1
  • Provenance: Baan Sammi Nature Resort and Bamboo Garden, Doi Saket, Chiang Mai, Thailand, cult., 2016. A low quantity of seeds collected by D. O. from a single flowering plant, Schizostachyum brachycladum 'Bali Kuning', ไผ่ทอง (phai thong), from Aug. to Oct. 2016.
  • Photos: Album in flickr.
  • Description: Text information and links in Google Site.
  • Seed weight: 0.4 g ≈ 10 dried spikelets (bract-wrapped seeds).
  • Seed viability: Unknown, viability assumed to last a few months.
  • Seed germination: Seeds were sown out immediately after collecting (tests 160811, 160822, 160903, 160911, 161008, 161017, 161029). 48 seeds were collected from 11 Aug. to 29 Oct. 2016, of which 46 seeds were used in 7 batches for germination tests during this period. Altogether 12 seeds germinated (= 26%), of which 10 developed seedlings with a single primary leaf blade at least. All blades were albinistic (complete or nearly complete lack of chlorophyll pigments), and none of the seedlings did survive and died within one to three weeks from developing a first leaf blade. Hence, one can assume that 'Bali Kuning' is not capable to produce seeds that can develop seedlings with sufficient chlorophyll pigments to initiate photo­synthesis to survive, but the number of seeds available for tests has been too small to verify this assumption.
  • Comments: This species, Schizostachyum brachycladum, flowers nearly every year, usually does not produce any seeds, and its flowering does not cause harm to vegetative growth. This is the first time, since the plant was established in 2008, that I found seeds of this species. The fruit, a caryopsis, has a long persistent style which is typical for species in the genus Schizo­stachyum.

Schizostachyum brachycladum 'Bali Kuning' (BS-0191):
Culms and a new shoot (left), habit (right)

Schizostachyum brachycladum 'Bali Kuning':
Flowers on the mother plant (BS-0191) (top),
seeds (BS-0191A) with lemma and palea (mid),
and without lemma and palea (bottom)

One of the seedlings from seeds of Schizostachyum brachycladum 'Bali Kuning'


Chapter 2
  • Provenance: Boonthammee Bamboo Garden, Hang Dong, Chiang Mai, Thailand, cult., 2016. A low quantity of seeds found in the spikelets and collected by ธ. บ. from a single flowering plant, Schizostachyum brachy­cladum 'Bali Kuning', ไผ่ทอง (phai thong), in Aug. 2016.
  • Photos in fb, 7 Aug. 2016.
  • Seed germination: A few seeds germinated and developed seedlings. As early as after 1 week, each of the seedlings had developed one leaf-blade, then all seedlings soon thereafter died, for unknown reason. One seedling grew to a height of 3–4 cm, had developed a "yellow" [sic!] culm and a single "mid green" [sic!] (not yellowish) leaf-blade, then died after two weeks. Unfortunately, this process was not documented by photos, but confirmed by ธ. บ. (pers. comm., 15–17 Apr. 2017).
  • Comments: This record gives reason to assume that the yellow stem variety of Schizostachyum brachycladum could be capable to produce viable seeds, and that seedlings might develop yellow stems and green leaves, and potentially survives. Although, this seems to be a rather rare occasion.

Schizostachyum brachycladum 'Bali Kuning': Seeds, bracts removed,
collected from a plant at Boonthammee Bamboo Garden, Hang Dong, Chiang Mai
(courtesy นายธรรมรัตน์ บุญธรรมมี)

Schizostachyum brachycladum 'Bali Kuning': A germinating seed,
from a plant at Boonthammee Bamboo Garden, Hang Dong, Chiang Mai
(courtesy นายธรรมรัตน์ บุญธรรมมี)


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